M25988/1-331

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5331 O-Ring

National Stock Number

5331-00-279-9319

Item Name Code

47946

Assigment Date

08/22/1973 (53 years ago)

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

70.0 shore durometer a nominal hardness rating, 0.205 inches minimum and 0.215 inches maximum cross-sectional height, 2.645 inches nominal outside diameter, 2.207 inches minimum and 2.243 inches maximum center hole diameter, 125 maximum elongation percentage

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Outside Diameter: 2.645 inches nominal
Cross-Sectional Height: 0.205 inches minimum and 0.215 inches maximum
Center Hole Diameter: 2.207 inches minimum and 2.243 inches maximum
Elongation Percentage: 125 maximum
Hardness Rating: 70.0 shore durometer a nominal
Material: rubber fluorosilicone class fq

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
C90ST0109-03	O-Ring
M25988/1-331	O-Ring

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5331-00-279-9319?

The FSCG of the NSN 5331-00-279-9319 is 5331

Does the NSN 5331-00-279-9319 have a Schedule B code assigned?

Yes, the Schedule B code is 4016930000

Does NSN 5331-00-279-9319 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5331-00-279-9319 contain precious materials?

Item does not contain precious metal.

Does NSN 5331-00-279-9319 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5331-00-279-9319 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Aug 22, 1973