Home · FSC 5331 O-Ring · NSN 5331-00-279-9353

NSN 5331-00-279-9353 — O-Ring

NIIN 00-279-9353 · unit of issue EA · AAC D (stocked, centrally managed (dla)) · source of supply SMS

Buying rhythm

from 8 government buys since 2016

The government has bought this item about every 3 months (irregular, gaps vary ±176%). Last buy Apr 28, 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 5331-00-279-9353 is the national stock number for an o-ring in federal supply class 5331 (O-Ring). It cross-references to 6 manufacturer part numbers from 4 CAGE codes, including Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M, Parker-Hannifin Corp, Eaton Aerospace LLC Dba Sterer Engineering Div Valve & Actuator; the primary is 2-242L677-70. The unit of issue is EA and the FLIS list price is $2.65.

The U.S. government has bought this item 18 times on record, 11 of them in the last 24 months, most recently on May 19, 2026 at $2.05 each from Noble Supply & Logistics, LLC. The median unit price paid over 36 months is $2.05. 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.

6

part numbers from 4 CAGEs

0

open solicitations, all agencies

11

government buys in 24 months · median $2.05

0

sellers with confirmed stock

Watch NSN 5331-00-279-9353: an email the morning the government solicits or buys it, or an AD names it. Free.
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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part numberCAGEManufacturerReferenceVariation
M25988/1-24281349Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M2 · Item ident. reference2 · Fully interchangeable
MIL-DTL-25988/181349Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M41 · Not fully interchangeable
2-242L677-7002697Parker-Hannifin Corp5 · Secondary reference9 · Reference only
2661058Y24209790Eaton Aerospace LLC Dba Sterer Engineering Div Valve & Actuator5 · Secondary reference9 · Reference only
MIL-R-25988/181349Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M5 · Secondary reference9 · Reference only
5331PL08449259009HJednolity Indeks Materialowy - Uniform Material Index69 · Reference only

Government demand

Nothing open right now. Last government buy May 19, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

DateVendorQtyUnit costAmountBuyerReference
May 19, 2026Noble Supply & Logistics, LLC 1HEN935$2.05DlaSPE4A526FB1R1
May 18, 2026Noble Supply & Logistics, LLC 1HEN9253$2.05DlaSPE4A526FB1E3
May 15, 2026Noble Supply & Logistics, LLC 1HEN929$2.05DlaSPE4A526FB0U3
May 13, 2026Noble Supply & Logistics, LLC 1HEN97$2.05DlaSPE4A526FB99E
May 12, 2026Noble Supply & Logistics, LLC 1HEN949$2.05DlaSPE4A526FB94W
May 11, 2026Noble Supply & Logistics, LLC 1HEN92,031$2.05DlaSPE4A526FB87N
May 6, 2026Noble Supply & Logistics, LLC 1HEN920$2.05DlaSPE4A526FB618
May 5, 2026Noble Supply & Logistics, LLC 1HEN98$2.05DlaSPE4A526FB436
May 1, 2026Noble Supply & Logistics, LLC 1HEN951$2.05DlaSPE4A526FAZZC
Apr 30, 2026Noble Supply & Logistics, LLC 1HEN960$2.05DlaSPE4A526FAZSC
Apr 28, 2026Noble Supply & Logistics, LLC 1HEN93$2.05DlaSPE4A526FAZEP
Mar 15, 2019Blade Industrial Products Inc 1JYT163$1.64DlaSPE5EY19F9888
Nov 15, 2018Blade Industrial Products Inc 1JYT1316$1.64DlaSPE5EY19F2821
Aug 21, 2018Blade Industrial Products Inc 1JYT11,325$1.64DlaSPE5EY18F344G
Jul 19, 2018Blade Industrial Products Inc 1JYT1611$1.64DlaSPE5EY18F255H
May 17, 2018Blade Industrial Products Inc 1JYT12,605$1.64DlaSPE5EY18F054A
Mar 16, 2018Blade Industrial Products Inc 1JYT1899$1.64DlaSPE5EY18F7887
Nov 4, 2016Blade Industrial Products Inc 1JYT13,800$1.63DlaSPE5EY15D05010212

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 18 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, or request a quote on 2-242L677-70.

Request 2-242L677-70

No account needed. Goes to the sellers who carry this number or its family.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price
$2.65
Unit of issue
EA
Acquisition advice
D — Stocked, centrally managed (DLA)
Source of supply
SMS
Effective
Jun 1, 2026

Item characteristics

Outside Diameter
INCHES NOMINAL 4.262
Cross-Sectional Height
INCHES MINIMUM 0.135 AND INCHES MAXIMUM 0.143
Center Hole Diameter
INCHES MINIMUM 3.956 AND INCHES MAXIMUM 4.012
Elongation Percentage
MAXIMUM 125
Hardness Rating
SHORE DUROMETER A NOMINAL 70.0
Material
RUBBER FLUOROSILICONE CLASS FQ

Related stock numbers

Other NSNs filed under the same part numbers.

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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