Home · FSC 5331 O-Ring · NSN 5331-12-166-3385
NSN 5331-12-166-3385 — O-Ring
NIIN 12-166-3385
Buying rhythm
from 4 government buys since 2018
The government has bought this item about every 9 months (irregular, gaps vary ±108%). Last buy Sep 23, 2026. The gaps are too uneven to put a window on the next one.
How well this works: for irregular items, "next buy about one typical gap after the last, give or take 151 days" caught the actual next buy 31% of the time across 21,161 past buys, against 24% for a fixed "one year later" guess. A rhythm, not a schedule: DLA buys when stock and demand say so. Every item due for a buy now.
NSN 5331-12-166-3385 is the national stock number for an o-ring in federal supply class 5331 (O-Ring).
The U.S. government has bought this item 10 times on record, 1 of them in the last 24 months, most recently on September 23, 2026 for $381 from Central Power Systems & Services, LLC. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.
0
part numbers
0
open solicitations, all agencies
1
government buy in 24 months
0
sellers with confirmed stock
Cross-references
Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.
Government demand
Nothing open right now. Last government buy Sep 23, 2026. Watch this NSN and we will email you when it is solicited.
What the government paid
| Date | Vendor | Qty | Unit cost | Amount | Buyer | Reference |
|---|---|---|---|---|---|---|
| Sep 23, 2026 | Central Power Systems & Services, LLC 0PJT5 | $381 | Dla | SPE7L126V250Z » Award/Basic Package View | ||
| Dec 11, 2019 | Stewart & Stevenson Power Products LLC 3GMY8 | 120 | $0.99 | Dla | SPE5E820V1895 | |
| Mar 12, 2019 | Howco Distributing Co. 5E074 | 35 | $2.74 | Dla | SPE5E819V4641 | |
| Sep 5, 2018 | Central Power Systems & Services, LLC 0PJT5 | 18 | $10.00 | Dla | SPE5E818V9642 | |
| Jan 6, 2015 | Lynn Electronics LLC 19151 | 31 | $10.00 | Dla | SPE5E815V2130 | |
| Oct 2, 2014 | Lynn Electronics LLC 19151 | 3 | $24.90 | Dla | SPE5E815V0076 | |
| Aug 19, 2014 | Lynn Electronics LLC 19151 | 3 | $26.40 | Dla | SPE5E014V2308 | |
| Aug 4, 2014 | Stewart & Stevenson Power Products LLC 3GMY8 | 1 | $51.26 | Dla | SPE5E814V7655 | |
| Mar 11, 2014 | Ese, Inc. Dba E S Components Company 1GN08 | 1 | $40.00 | Dla | SPE5E814V3416 | |
| May 23, 2001 | Allied Defense Industries, LLC 0GD25 | 25 | $12.29 | Dla | SP054001MV998 |
Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 10 buys on record in total.
Sellers with confirmed stock
No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does.
Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.
About this page
An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.
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