2C2728

View detailed technical data, stock status, and sourcing information for: 2C2728
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5331 O-Ring

National Stock Number

5331-00-764-5311

Item Name Code

47946

Assigment Date

01/01/1960 (66 years ago)

A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes:felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes:cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.

0.205 inches minimum and 0.215 inches maximum cross-sectional height, rubber butadiene-acrylonitrile class nbr material, 2.090 inches minimum and 2.110 inches maximum center hole diameter

Product Characteristics

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

Cross-Sectional Height: 0.205 inches minimum and 0.215 inches maximum
Center Hole Diameter: 2.090 inches minimum and 2.110 inches maximum
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Below is a list of NSNs that have been officially superseded by this NSN: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
3830-00-594-5428	No Name Available	05/27/1972
2930-00-893-9816	No Name Available	04/29/1972

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
1281-6204	O-Ring
25K60204	O-Ring
2C2728	O-Ring
2C63655	O-Ring
3R5934	O-Ring
4254806	O-Ring
682241BN	O-Ring
682241GG	O-Ring
682241GGG	O-Ring
A18761-6	O-Ring
S7-33	O-Ring

FAQs

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

What is the FSCG of the NSN 5331-00-764-5311?

The FSCG of the NSN 5331-00-764-5311 is 5331

Does the NSN 5331-00-764-5311 have a Schedule B code assigned?

Yes, the Schedule B code is 4016930000

Does NSN 5331-00-764-5311 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 5331-00-764-5311 contain precious materials?

Precious metal content is unknown

Does NSN 5331-00-764-5311 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 5331-00-764-5311 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960