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Obsolescence watch
Stock numbers the government still buys whose supply base is thinning. Each one carries the reasons in plain words: the government's own terminal codes, approved sources whose SAM registration has expired, a single source, a registration about to lapse, years of solicitations without an award. A source we cannot verify in SAM is shown as unverified, never counted as gone. Rebuilt nightly; this list is from 2026-09-28.
150 stock numbers
| NSN | Item | Risk | Why | Sources | Last award | Open |
|---|---|---|---|---|---|---|
| 5331-01-292-0154 | O-Ring | High 75 | single approved source, and its SAM registration has expired; solicited in the last 12 months; last award Nov 2019; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 1 expired · 0 unverified | Nov 2019$20.61 | 1 in 12 m |
| 5331-01-477-2662 | O-Ring | Elevated 56 | single approved source, and its SAM registration has expired; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 1 expired · 0 unverified | Jul 2026$14.95 | 1 in 12 m |
| 5331-00-021-3933 | O-Ring | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (09032) is due for renewal by Sep 15, 2026; solicited in the last 12 months; last award Sep 2022; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2022$12.25 | 1 |
| 5331-01-178-5972 | O-Ring | Elevated 50 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (61208) is due for renewal by Sep 2, 2026; solicited in the last 12 months; last award Apr 2018; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Apr 2018$25.15 | 1 |
| 5331-01-533-7587 | O-Ring | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (63600) is due for renewal by Nov 17, 2026; solicited in the last 12 months; last award Jan 2014; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jan 2014$6.67 | 1 |
| 5331-01-534-9062 | O-Ring | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; solicited in the last 12 months; last award Aug 2019; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2019$0.90 | 1 |
| 5331-01-589-7346 | O-Ring Set | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (1SNY9) is due for renewal by Sep 24, 2026; solicited in the last 12 months; last award Mar 2014; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2014$18.57 | 1 |
| 5331-00-456-0014 | O-Ring | Elevated 50 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (73475) is due for renewal by Oct 16, 2026; solicited in the last 12 months; last award Jun 2021; AMSC L on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jun 2021$14.44 | 1 in 12 m |
| 5331-01-181-0820 | O-Ring | Elevated 50 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (77308) is due for renewal by Sep 3, 2026; solicited in the last 12 months; last award Apr 2013; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Apr 2013$3.00 | 1 in 12 m |
| 5331-01-221-9653 | O-Ring | Elevated 50 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (3T9T9) is due for renewal by Dec 15, 2026; solicited in the last 12 months; last award Feb 1988; AMSC R on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | Feb 1988$2.44 | 1 in 12 m |
| 5331-01-318-4563 | O-Ring | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (35795) is due for renewal by Oct 31, 2026; solicited in the last 12 months; last award Jun 2019; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2019$8.75 | 1 in 12 m |
| 5331-01-457-8877 | O-Ring | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (71871) is due for renewal by Oct 15, 2026; solicited in the last 12 months; last award Sep 2022; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2022$167.91 | 1 in 12 m |
| 5331-01-479-1502 | O-Ring | Elevated 50 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (15187) is due for renewal by Oct 14, 2026; solicited in the last 12 months; last award May 2016; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | May 2016$10.25 | 1 in 12 m |
| 5331-01-580-2728 | O-Ring | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; solicited in the last 12 months; last award Feb 2019; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2019$3.19 | 1 in 12 m |
| 5331-01-580-6532 | O-Ring | Elevated 50 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (11859) is due for renewal by Oct 13, 2026; solicited in the last 12 months; last award Dec 2017; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Dec 2017$39.00 | 1 in 12 m |
| 5331-01-648-7404 | O-Ring | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (338X5) is due for renewal by Oct 1, 2026; solicited in the last 12 months; last award Feb 2018; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2018$32.00 | 1 in 12 m |
| 5331-01-521-3769 | O-Ring | Elevated 47 | single approved source, SAM status unverified; FLIS lists every source CAGE with a status other than Active; solicited in the last 12 months; last award Jul 2017; AMSC R on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Jul 2017$24.01 | 1 |
| 5331-01-521-3766 | O-Ring | Elevated 47 | single approved source, SAM status unverified; FLIS lists every source CAGE with a status other than Active; solicited in the last 12 months; last award Feb 2018; AMSC R on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Feb 2018$188.01 | 1 in 12 m |
| 5331-01-590-8150 | O-Ring | Elevated 47 | single approved source, SAM status unverified; FLIS lists every source CAGE with a status other than Active; solicited in the last 12 months; last award Mar 2022; AMSC R on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Mar 2022$2.35 | 1 in 12 m |
| 5331-01-617-1482 | O-Ring | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (6B701) is due for renewal by Oct 23, 2026; solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 2 |
| 5331-01-445-6455 | O-Ring | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (25204) is due for renewal by Dec 3, 2026; solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-471-5138 | O-Ring | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-661-4407 | O-Ring | Elevated 43 | every approved source we can verify in SAM has expired (1 of 2; 1 unverified); AMSC D on the latest solicitation: only approved sources may supply | 20 active · 1 expired · 1 unverified | Jan 2026$11.48 | 1 in 12 m |
| 5331-01-695-2839 | O-Ring Set | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-696-0765 | O-Ring | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (5NS11) is due for renewal by Aug 8, 2026; solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-398-1781 | O-Ring | Elevated 40 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Aug 2019 | 31 active · 0 expired · 2 unverified | Aug 2019$1.79 | 2 |
| 5331-01-168-9787 | O-Ring | Elevated 40 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Jun 2022 | 31 active · 0 expired · 2 unverified | Jun 2022$2.41 | 1 |
| 5331-01-381-0071 | O-Ring | Elevated 40 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Jan 2019 | 41 active · 0 expired · 3 unverified | Jan 2019$6.25 | 1 |
| 5331-01-507-7470 | O-Ring | Elevated 40 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award May 2016 | 21 active · 0 expired · 1 unverified | May 2016$49.50 | 1 |
| 5331-01-527-3377 | O-Ring | Elevated 40 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Apr 2020 | 31 active · 0 expired · 2 unverified | Apr 2020$11.34 | 2 in 12 m |
| 5331-01-007-4895 | O-Ring | Elevated 40 | one active source in SAM out of 7 approved (0 expired, 6 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Mar 2020 | 71 active · 0 expired · 6 unverified | Mar 2020$4.60 | 1 in 12 m |
| 5331-01-354-0236 | O-Ring | Elevated 40 | one active source in SAM out of 5 approved (0 expired, 4 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Dec 2020 | 51 active · 0 expired · 4 unverified | Dec 2020$0.67 | 1 in 12 m |
| 5331-01-354-0239 | O-Ring | Elevated 40 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Mar 2019 | 31 active · 0 expired · 2 unverified | Mar 2019$0.51 | 1 in 12 m |
| 5331-01-388-4084 | O-Ring | Elevated 40 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Apr 2010 | 31 active · 0 expired · 2 unverified | Apr 2010$4.51 | 1 in 12 m |
| 5331-01-451-2172 | O-Ring | Elevated 40 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Mar 2022 | 41 active · 0 expired · 3 unverified | Mar 2022$43.78 | 1 in 12 m |
| 5331-01-466-4363 | O-Ring | Elevated 40 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Jun 2007 | 21 active · 0 expired · 1 unverified | Jun 2007$3.80 | 1 in 12 m |
| 5331-01-526-9005 | O-Ring | Elevated 40 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award May 2013 | 21 active · 0 expired · 1 unverified | May 2013$2.56 | 1 in 12 m |
| 5331-01-615-4104 | O-Ring | Elevated 40 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; last award Aug 2023 | 21 active · 0 expired · 1 unverified | Aug 2023$2.23 | 1 in 12 m |
| 5331-01-687-3913 | O-Ring | Elevated 40 | single approved source (registered in SAM); that source's SAM registration (1QZK3) is due for renewal by Dec 4, 2026; solicited in the last 12 months; last award Jun 2022 | 11 active · 0 expired · 0 unverified | Jun 2022$20.00 | 1 in 12 m |
| 5331-01-693-6970 | O-Ring | Elevated 40 | single approved source (registered in SAM); that source's SAM registration (1QZK3) is due for renewal by Dec 4, 2026; solicited in the last 12 months; last award Jun 2022 | 11 active · 0 expired · 0 unverified | Jun 2022$30.00 | 1 in 12 m |
| 5331-01-237-4958 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Mar 2016; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2016$45.00 | 1 |
| 5331-00-141-7795 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Nov 2018; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Nov 2018$11.40 | 1 |
| 5331-01-094-2760 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Feb 2015; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2015$1.20 | 1 |
| 5331-01-115-0774 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Feb 2023; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Feb 2023$3.93 | 1 |
| 5331-01-181-0583 | O-Ring | Elevated 37 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Mar 2021; AMSC L on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Mar 2021$29.82 | 1 |
| 5331-01-209-7726 | O-Ring | Elevated 37 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Jul 2018; AMSC L on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jul 2018$1.88 | 1 |
| 5331-01-256-0427 | O-Ring | Elevated 37 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Jun 2017; AMSC L on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jun 2017$5.28 | 1 |
| 5331-01-278-9488 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Apr 2021; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Apr 2021$128.12 | 1 |
| 5331-01-339-0714 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Feb 2018; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2018$68.00 | 1 |
| 5331-01-388-8627 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Oct 2019; AMSC P on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Oct 2019$81.00 | 1 |
| 5331-01-419-9126 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Jan 2003; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jan 2003$5.00 | 1 |
| 5331-01-484-2616 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Dec 2022; AMSC P on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2022$418.80 | 1 |
| 5331-01-537-1069 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Aug 2014; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2014$65.82 | 1 |
| 5331-01-546-3703 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Jan 2020; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jan 2020$5.27 | 1 |
| 5331-01-559-9466 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Apr 2018; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2018$8.50 | 1 |
| 5331-01-579-3259 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Jun 2019; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jun 2019$97.86 | 1 |
| 5331-01-605-3903 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Jul 2022; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jul 2022$55.92 | 1 |
| 5331-01-655-5031 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Aug 2023; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2023$2.33 | 1 |
| 5331-00-126-5202 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Jul 2015; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jul 2015$0.71 | 1 in 12 m |
| 5331-00-157-6630 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Jan 2023; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jan 2023$627.52 | 1 in 12 m |
| 5331-00-251-4237 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Oct 1969; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Oct 1969$0.36 | 1 in 12 m |
| 5331-00-410-6975 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Jan 2021; AMSC P on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jan 2021$1.69 | 1 in 12 m |
| 5331-01-047-0440 | O-Ring | Elevated 37 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Jan 1988; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jan 1988$0.65 | 1 in 12 m |
| 5331-01-133-0888 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Jun 2017; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2017$8.90 | 1 in 12 m |
| 5331-01-181-4941 | O-Ring | Elevated 37 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Jan 2022; AMSC L on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jan 2022$4.65 | 1 in 12 m |
| 5331-01-188-0871 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award May 2023; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2023$8.55 | 1 in 12 m |
| 5331-01-234-3814 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Nov 2018; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Nov 2018$3.69 | 1 in 12 m |
| 5331-01-305-0668 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Dec 2020; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2020$3.45 | 1 in 12 m |
| 5331-01-338-6639 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Dec 2022; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2022$152.72 | 1 in 12 m |
| 5331-01-430-7232 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Dec 2022; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2022$7.50 | 1 in 12 m |
| 5331-01-434-3763 | O-Ring | Elevated 37 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Jul 2023; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jul 2023$107.13 | 1 in 12 m |
| 5331-01-439-2192 | O-Ring | Elevated 37 | one active source in SAM out of 6 approved (0 expired, 5 unverified); solicited in the last 12 months; last award Sep 2020; AMSC L on the latest solicitation: only approved sources may supply | 61 active · 0 expired · 5 unverified | Sep 2020$17.00 | 1 in 12 m |
| 5331-01-503-8946 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Sep 2021; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Sep 2021$279.81 | 1 in 12 m |
| 5331-01-572-6728 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award May 2018; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | May 2018$8.25 | 1 in 12 m |
| 5331-01-650-3763 | O-Ring | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Mar 2016; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Mar 2016$1.00 | 1 in 12 m |
| 5331-01-670-9569 | O-Ring | Elevated 37 | single approved source (registered in SAM); solicited in the last 12 months; last award Apr 2021; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2021$2,106.85 | 1 in 12 m |
| 5331-01-656-2398 | O-Ring | Elevated 35 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; no award in our record | 31 active · 0 expired · 2 unverified | none on record | 1 |
| 5331-01-678-1443 | O-Ring | Elevated 35 | single approved source (registered in SAM); that source's SAM registration (0TZS1) is due for renewal by Dec 10, 2026; solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5331-01-513-7062 | O-Ring | Elevated 35 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; no award in our record | 31 active · 0 expired · 2 unverified | none on record | 1 in 12 m |
| 5331-01-666-7885 | O-Ring | Elevated 35 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026; solicited in the last 12 months; no award in our record | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 5331-01-680-6536 | O-Ring | Elevated 35 | single approved source (registered in SAM); that source's SAM registration (0GFE1) is due for renewal by Oct 10, 2026; solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-718-7596 | O-Ring | Elevated 35 | single approved source (registered in SAM); that source's SAM registration (32242) is due for renewal by Aug 21, 2026; solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-738-1801 | O-Ring | Elevated 35 | single approved source (registered in SAM); that source's SAM registration (07309) is due for renewal by Dec 5, 2026; solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-256-0430 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (55378) is due for renewal by Dec 22, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2026$595.00 | 2 |
| 5331-00-436-3369 | O-Ring | Watch 31 | one active source in SAM out of 3 approved (1 expired, 1 unverified); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; AMSC R on the latest solicitation: only approved sources may supply | 31 active · 1 expired · 1 unverified | Mar 2025$1.46 | 1 |
| 5331-00-753-1849 | O-Ring | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (71871) is due for renewal by Oct 15, 2026; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Aug 2026$41.46 | 1 |
| 5331-01-122-0830 | O-Ring | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (99657) is due for renewal by Oct 21, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Aug 2026$368.00 | 1 |
| 5331-01-214-7695 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (90031) is due for renewal by Nov 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2026$52.67 | 1 |
| 5331-01-352-3353 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2025$18.42 | 1 |
| 5331-01-368-3631 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (57328) is due for renewal by Dec 8, 2026; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2025$6.11 | 1 |
| 5331-01-533-4280 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5331-01-535-2558 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (62144) is due for renewal by Sep 8, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2026$7.95 | 1 |
| 5331-01-608-8102 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0X9M7) is due for renewal by Nov 19, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2026$47.50 | 1 |
| 5331-01-666-8605 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (57328) is due for renewal by Dec 8, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jan 2024$15.79 | 1 |
| 5331-01-727-2661 | O-Ring | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (62161) is due for renewal by Dec 17, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Sep 2026$27.20 | 1 |
| 5331-12-132-9696 | O-Ring | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award May 2014; AMSC R on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | May 2014$0.71 | 1 |
| 5331-12-166-3385 | O-Ring | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Dec 2019; AMSC R on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Dec 2019$0.99 | 1 |
| 5331-12-346-9583 | O-Ring | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Feb 2023; AMSC P on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Feb 2023$14.86 | 1 |
| 5331-25-161-4045 | O-Ring Set | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Oct 2017; AMSC D on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Oct 2017$159.00 | 1 |
| 5331-99-925-2991 | O-Ring | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Aug 2014; AMSC L on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Aug 2014$15.00 | 1 |
| 5331-01-651-0652 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 2 in 12 m |
| 5331-00-115-1361 | O-Ring | Watch 31 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (15187) is due for renewal by Oct 14, 2026; AMSC D on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | May 2026$13.37 | 1 in 12 m |
| 5331-00-633-4935 | O-Ring | Watch 31 | one active source in SAM out of 5 approved (0 expired, 4 unverified); that source's SAM registration (1PQF4) is due for renewal by Nov 14, 2026; AMSC D on the latest solicitation: only approved sources may supply | 51 active · 0 expired · 4 unverified | Feb 2025$295.00 | 1 in 12 m |
| 5331-00-641-2574 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (81205) is due for renewal by Nov 11, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2026$30.93 | 1 in 12 m |
| 5331-00-855-8059 | O-Ring | Watch 31 | one active source in SAM out of 6 approved (0 expired, 5 unverified); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; AMSC R on the latest solicitation: only approved sources may supply | 61 active · 0 expired · 5 unverified | Aug 2025$1.20 | 1 in 12 m |
| 5331-00-913-6038 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-030-3368 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC P on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-077-3151 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-149-9614 | O-Ring | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (71871) is due for renewal by Oct 15, 2026; AMSC P on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Oct 2025$3.48 | 1 in 12 m |
| 5331-01-392-5164 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (35795) is due for renewal by Oct 31, 2026; AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2025$344.00 | 1 in 12 m |
| 5331-01-447-1967 | O-Ring | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | none on record | 1 in 12 m |
| 5331-01-463-8691 | O-Ring | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (15187) is due for renewal by Oct 14, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jul 2024$43.03 | 1 in 12 m |
| 5331-01-471-6187 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2025$38.80 | 1 in 12 m |
| 5331-01-527-8458 | O-Ring | Watch 31 | one active source in SAM out of 5 approved (0 expired, 4 unverified); that source's SAM registration (62161) is due for renewal by Dec 17, 2026; AMSC C on the latest solicitation: only approved sources may supply | 51 active · 0 expired · 4 unverified | Oct 2025$12.95 | 1 in 12 m |
| 5331-01-601-7858 | O-Ring | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC P on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 5331-01-603-9284 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-613-8287 | O-Ring | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0BUN9) is due for renewal by Aug 19, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2025$229.00 | 1 in 12 m |
| 5331-01-662-1006 | O-Ring | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (62445) is due for renewal by Nov 20, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jul 2026$1.24 | 1 in 12 m |
| 5331-01-678-8897 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC P on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-685-0712 | O-Ring Set | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0JKF0) is due for renewal by Dec 9, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$72.53 | 1 in 12 m |
| 5331-01-703-3419 | O-Ring Assortment | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-714-5085 | O-Ring | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | none on record | 1 in 12 m |
| 5331-01-718-7558 | O-Ring | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-01-738-5012 | O-Ring Set | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5331-12-134-1823 | O-Ring | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Sep 2022; AMSC R on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Sep 2022$3.69 | 1 in 12 m |
| 5331-12-313-5116 | O-Ring | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Sep 2023; AMSC D on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Sep 2023$13.79 | 1 in 12 m |
| 5331-15-180-2378 | O-Ring | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Feb 2021; AMSC D on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Feb 2021$5.89 | 1 in 12 m |
| 5331-01-320-4923 | O-Ring | Watch 30 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Aug 2016 | 31 active · 0 expired · 2 unverified | Aug 2016$4.95 | 1 |
| 5331-01-119-5932 | O-Ring | Watch 30 | one active source in SAM out of 6 approved (0 expired, 5 unverified); solicited in the last 12 months; last award Jul 2022 | 61 active · 0 expired · 5 unverified | Jul 2022$1.81 | 2 in 12 m |
| 5331-01-500-8632 | O-Ring | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Nov 2012 | 21 active · 0 expired · 1 unverified | Nov 2012$136.00 | 2 in 12 m |
| 5331-00-248-3140 | O-Ring | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Jun 2019 | 11 active · 0 expired · 0 unverified | Jun 2019$0.30 | 1 in 12 m |
| 5331-01-325-6041 | O-Ring | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Mar 2022 | 21 active · 0 expired · 1 unverified | Mar 2022$1.08 | 1 in 12 m |
| 5331-01-020-4540 | O-Ring | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Aug 2010; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Aug 2010$67.35 | 1 |
| 5331-01-288-9398 | O-Ring | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Jul 2023; AMSC L on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Jul 2023$97.97 | 1 |
| 5331-01-322-2839 | O-Ring | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Oct 1993; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Oct 1993$4.69 | 1 in 12 m |
| 5331-01-474-3675 | O-Ring | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Feb 2007; AMSC L on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Feb 2007$50.00 | 1 in 12 m |
| 5331-01-540-2948 | O-Ring | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award May 2014; AMSC L on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | May 2014$0.53 | 1 in 12 m |
| 5331-01-557-7377 | O-Ring | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Aug 2020; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Aug 2020$1.50 | 1 in 12 m |
| 5331-01-373-1960 | O-Ring | Watch 25 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (05824) is due for renewal by Nov 21, 2026 | 21 active · 0 expired · 1 unverified | Mar 2025$9.08 | 3 |
| 5331-00-171-5737 | O-Ring | Watch 25 | one active source in SAM out of 5 approved (0 expired, 4 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 51 active · 0 expired · 4 unverified | Apr 2025$2.56 | 1 |
| 5331-00-846-1589 | O-Ring | Watch 25 | one active source in SAM out of 6 approved (0 expired, 5 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 61 active · 0 expired · 5 unverified | Dec 2023$12.84 | 1 |
| 5331-01-385-3444 | O-Ring | Watch 25 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 31 active · 0 expired · 2 unverified | Dec 2024$0.58 | 1 |
| 5331-01-437-6218 | O-Ring | Watch 25 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 41 active · 0 expired · 3 unverified | Jul 2026$39.91 | 1 |
| 5331-01-480-1813 | O-Ring | Watch 25 | one active source in SAM out of 5 approved (0 expired, 4 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 51 active · 0 expired · 4 unverified | Aug 2026$0.97 | 1 |
| 5331-01-483-1232 | O-Ring | Watch 25 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5331-01-614-9170 | O-Ring | Watch 25 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 21 active · 0 expired · 1 unverified | Mar 2024$0.97 | 1 |
| 5331-01-615-5617 | O-Ring | Watch 25 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 41 active · 0 expired · 3 unverified | Feb 2026$3.42 | 1 |
| 5331-01-645-9434 | O-Ring | Watch 25 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 31 active · 0 expired · 2 unverified | Aug 2026$3.12 | 1 |
| 5331-01-734-8727 | O-Ring | Watch 25 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5331-00-700-0639 | O-Ring | Watch 25 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0U583) is due for renewal by Sep 9, 2026 | 21 active · 0 expired · 1 unverified | Aug 2026$13.29 | 2 in 12 m |
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