20A11C2M249

View detailed technical data, stock status, and sourcing information for: 20A11C2M249
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5331 O-Ring

National Stock Number

5331-01-012-5148

Item Name Code

47946

Assigment Date

11/12/1975 (50 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.

4.859 inches nominal center hole diameter, -30.0 fahrenheit and 250.0 fahrenheit temp rating, 0.139 inches nominal cross-sectional height, 331 maximum elongation percentage, 5.137 inches nominal outside diameter

Product Characteristics

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

Outside Diameter: 5.137 inches nominal
Temp Rating: -30.0 fahrenheit and 250.0 fahrenheit
Cross-Sectional Height: 0.139 inches nominal
Center Hole Diameter: 4.859 inches nominal
Elongation Percentage: 331 maximum
Hardness Rating: 70.0 shore durometer a nominal
Material: rubber butadiene-acrylonitrile class nbr

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5330-00-494-8511	No Name Available	01/01/1994
5330-01-376-5204	No Name Available	06/01/1999

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
2-249 N674-7	O-Ring
2-249-N674-70	O-Ring
2-249N674-70	O-Ring
203540	O-Ring
20A11C2M249	O-Ring
500921	O-Ring
5500W10P059	O-Ring
671-00249-0	O-Ring
AS568-249	O-Ring
D2000 TYPE M3CH714	O-Ring
NAS568-249	O-Ring

FAQs

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

What is the FSCG of the NSN 5331-01-012-5148?

The FSCG of the NSN 5331-01-012-5148 is 5331

Does the NSN 5331-01-012-5148 have a Schedule B code assigned?

Yes, the Schedule B code is 4016930000

Does NSN 5331-01-012-5148 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 5331-01-012-5148 contain precious materials?

Precious metal content is unknown

Does NSN 5331-01-012-5148 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 5331-01-012-5148 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Wed, Nov 12, 1975