Home · FSC 5331 O-Ring · NSN 5331-00-826-3751

NSN 5331-00-826-3751 — O-Ring

NIIN 00-826-3751 · unit of issue EA · AAC D (stocked, centrally managed (dla)) · source of supply SMS

Buying rhythm

from 4 government buys since 2017

The government has bought this item about every 9 months (irregular, gaps vary ±123%). Last buy Sep 10, 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 5331-00-826-3751 is the national stock number for an o-ring in federal supply class 5331 (O-Ring). It cross-references to 7 manufacturer part numbers from 7 CAGE codes, including Sae International, Parker Hannifin Corporation Div O-Ring Division, Dolly Mfg Corp; the primary is 005-1467. The unit of issue is EA and the FLIS list price is $52.63.

The U.S. government has bought this item 6 times on record, 3 of them in the last 24 months, most recently on September 10, 2026 for $650 from Blade Industrial Products Inc. The median unit price paid over 36 months is $37.72. 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.

part numbers from 7 CAGEs

open solicitations, all agencies

government buys in 24 months · median $37.72

sellers with confirmed stock

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Cross-references

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

Part number	CAGE	Manufacturer	Reference	Variation
MS29561-005	0U583	Sae International	3 · Design control (vendor)	2 · Fully interchangeable
SAE AS29561	0U583	Sae International	3 · Design control (vendor)	1 · Not fully interchangeable
005-1467	25184	Parker Hannifin Corporation Div O-Ring Division	5 · Secondary reference	9 · Reference only
2-005 47-071	02692	Dolly Mfg Corp	5 · Secondary reference	9 · Reference only
MS29561-005	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
MS29561-005	81343	Society Of Automotive Engineers Inc	5 · Secondary reference	9 · Reference only
MS29561-005ES	H2313	Eriks B.V.	5 · Secondary reference	9 · Reference only
PRP9023-4142-70	25184	Parker Hannifin Corporation Div O-Ring Division	5 · Secondary reference	9 · Reference only
58901A008005	A0810	Leonardo S.P.A.	8 · Manufacturer	2 · Fully interchangeable

Government demand

Nothing open right now. Last government buy Sep 10, 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 10, 2026	Blade Industrial Products Inc 1JYT1			$650	Dla	SPE7L126V224A » Award/Basic Package View
Dec 17, 2025	Psp Seals LLC 1SA02	9	$36.55		Dla	SPE7L126V3497
Nov 25, 2025	Simisanka Savunma Sanayi Tekstil Medikal Ticaret Ihracat Ithalat Limited Sirketi TL736	9	$38.90		Dla	SPE7L026V0325
Aug 3, 2017	Franklin Southern Manufacturing LLC 7E0D2	313	$0.44		Dla	SPE5E817V7688
Jun 16, 2014	Dbr Industries, Inc. 1K697	695	$0.32		Dla	SPE5E814V6442
Mar 12, 1997	Goldinger, Bernard Dba Conair Aviation Associates 2K255	60	$1.78		Dla	SP050097MLS56

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 6 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 005-1467.

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

DLA management data

FLIS unit price: $52.63
Unit of issue: EA
Acquisition advice: D — Stocked, centrally managed (DLA)
Source of supply: SMS
Shelf life code: Y
Effective: Jun 1, 2026

Item characteristics

Outside Diameter: INCHES NOMINAL 0.241
Cross-Sectional Height: INCHES MINIMUM 0.067 AND INCHES MAXIMUM 0.073
Center Hole Diameter: INCHES MINIMUM 0.096 AND INCHES MAXIMUM 0.106
Elongation Percentage: MAXIMUM 250
Hardness Rating: SHORE DUROMETER A NOMINAL 70.0
Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR

Related stock numbers

Other NSNs filed under the same part numbers.

00-853-6655 · O-Ring

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.