Home · FSC 5331 O-Ring · NSN 5331-01-398-1781

NSN 5331-01-398-1781 — O-Ring

NIIN 01-398-1781 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 5331-01-398-1781 is the national stock number for an o-ring in federal supply class 5331 (O-Ring). It cross-references to 1 manufacturer part number from 3 CAGE codes, including Society Of Automotive Engineers Inc, Sae International, Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M; the primary is MS3393-3. The unit of issue is EA and the FLIS list price is $2.43.

The U.S. government has bought this item 13 times on record, most recently on August 28, 2019 at $1.79 each from Government Sales Solutions, LLC. 1 solicitation is open right now, the soonest due October 8, 2026 for 2 EA. 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 number from 3 CAGEs

open solicitation, all agencies

government buys in 24 months

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
MS3393-3	81343	Society Of Automotive Engineers Inc	3 · Design control (vendor)	9 · Reference only
MS3393-3	0U583	Sae International	3 · Design control (vendor)	2 · Fully interchangeable
MS3393-3	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only

Government demand

Open DLA RFQs (DIBBS)

SPE7L326T289L · 2 EA · due Oct 8, 2026 · N · AMSC G · DIBBS

What the government paid

Date	Vendor	Qty	Unit cost	Buyer	Reference
Aug 28, 2019	Government Sales Solutions, LLC 6PX29	55	$1.79	Dla	SPE5E819P3103
May 10, 2017	Meridian Industries Inc 7SD19	67	$1.20	Dla	SPE5E817V5843
Jul 8, 2016	Edison Industrial Research, Inc. 79YS0	75	$1.45	Dla	SPE5E816V6138
Jun 4, 2016	Asrc Federal Facilities Logistics, LLC 79343	2	$1.83	Dla	SPM7LX10D9W06037R
Jun 2, 2016	Asrc Federal Facilities Logistics, LLC 79343	1	$1.83	Dla	SPM7LX10D9W06037A
Apr 1, 2016	Asrc Federal Facilities Logistics, LLC 79343	3	$1.83	Dla	SPM7LX10D9W06009R
Mar 25, 2016	Asrc Federal Facilities Logistics, LLC 79343	1	$1.83	Dla	SPM7LX10D9W06007B
Mar 17, 2016	Asrc Federal Facilities Logistics, LLC 79343	2	$1.83	Dla	SPM7LX10D9W06002B
Sep 9, 2015	Asrc Federal Facilities Logistics, LLC 79343	1	$1.83	Dla	SPM7LX10D9W068405
Aug 26, 2015	Asrc Federal Facilities Logistics, LLC 79343	1	$1.83	Dla	SPM7LX10D9W068268
Feb 27, 2015	Asrc Federal Facilities Logistics, LLC 79343	7	$1.81	Dla	SPM7LX10D9W066714
Sep 29, 2014	Asrc Federal Facilities Logistics, LLC 79343	3	$1.81	Dla	SPM7LX10D9W065640
Oct 27, 2008	Goldinger, Bernard Dba Conair Aviation Associates 2K255	2,200	$1.58	Dla	SPM5M209M0219

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 13 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 MS3393-3.

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

DLA management data

FLIS unit price: $2.43
Unit of issue: EA
Acquisition advice: J — Not stocked, central procurement
Source of supply: SMS
Shelf life code: Y
Effective: Dec 1, 2025

Item characteristics

Temp Rating: FAHRENHEIT -65.0 AND FAHRENHEIT 275.0
Cross-Sectional Height: INCHES MINIMUM 0.061 AND INCHES MAXIMUM 0.067
Center Hole Diameter: INCHES MINIMUM 0.296 AND INCHES MAXIMUM 0.306
Hardness Rating: SHORE DUROMETER A MINIMUM 75.0 AND SHORE DUROMETER A MAXIMUM 85.0
Material: RUBBER
Material Document And Classification: MIL SPEC SINGLE MATERIAL RESPONSE -IL--81716

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.