Home · NSN 00-191-3558

NSN 00-191-3558 — O-Ring

NIIN 00-191-3558 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 00-191-3558 is the national stock number for an o-ring. It cross-references to 3 manufacturer part numbers from 5 CAGE codes, including Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M, Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M, Honeywell International Inc.; the primary is M25988/2-165. The unit of issue is EA and the FLIS list price is $34.63.

No government purchase of this stock number is on our record yet. 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 5 CAGEs

open solicitations, 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
M25988/2-165	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	2 · Item ident. reference	2 · Fully interchangeable
MIL-DTL-25988/2	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	4	1 · Not fully interchangeable
M25988/2-165	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
S9412-165	70210	Honeywell International Inc.	5 · Secondary reference	1 · Not fully interchangeable
S9412-165	72599	Alliedsignal Inc Dba Allied-Signal Aerospace Co	5 · Secondary reference	9 · Reference only
S9412-165	99193	Honeywell International Inc.	5 · Secondary reference	1 · Not fully interchangeable

Government demand

Nothing open right now. Watch this NSN and we will email you when it is solicited.

What the government paid

No government purchase on record for this NSN.

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

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 M25988/2-165.

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

DLA management data

FLIS unit price: $34.63
Unit of issue: EA
Acquisition advice: J — Not stocked, central procurement
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Outside Diameter: INCHES NOMINAL 6.693
Cross-Sectional Height: INCHES MINIMUM 0.100 AND INCHES MAXIMUM 0.106
Center Hole Diameter: INCHES MINIMUM 6.447 AND INCHES MAXIMUM 6.527
Elongation Percentage: MAXIMUM 125
Hardness Rating: SHORE DUROMETER A NOMINAL 75.0
Material: RUBBER FLUOROSILICONE CLASS FQ

Related stock numbers

Other NSNs filed under the same part numbers.

00-031-2915 · O-Ring
00-150-1587 · O-Ring
00-179-9369 · O-Ring
00-179-9443 · O-Ring
00-179-9444 · O-Ring
00-184-4064 · O-Ring
00-187-5998 · O-Ring
00-220-5211 · 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.