M25988/1-345

View detailed technical data, stock status, and sourcing information for: M25988/1-345
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5331 O-Ring

National Stock Number

5331-01-174-8255

Item Name Code

47946

Assigment Date

03/23/1984 (42 years ago)

A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes:flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes:disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.

0.205 inches minimum and 0.215 inches maximum cross-sectional height, 4.395 inches nominal outside diameter, 70.0 shore durometer a nominal hardness rating, 3.947 inches minimum and 4.003 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: 4.395 inches nominal
Cross-Sectional Height: 0.205 inches minimum and 0.215 inches maximum
Center Hole Diameter: 3.947 inches minimum and 4.003 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
M25988/1-345	O-Ring

FAQs

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

What is the FSCG of the NSN 5331-01-174-8255?

The FSCG of the NSN 5331-01-174-8255 is 5331

Does NSN 5331-01-174-8255 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 5331-01-174-8255 contain precious materials?

Item does not contain precious metal.

Does NSN 5331-01-174-8255 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 5331-01-174-8255 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Fri, Mar 23, 1984