MS28775-128CP

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5331 O-Ring

National Stock Number

5331-01-241-1939

Item Name Code

47946

Assigment Date

09/23/1986 (39 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.

-65.0 fahrenheit and 275.0 fahrenheit temp rating, 1.481 inches minimum and 1.493 inches maximum center hole diameter, 1.693 inches nominal peripheral diameter, 160 maximum elongation percentage, 0.100 inches minimum and 0.106 inches maximum cross-sectional height

Product Characteristics

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

Temp Rating: -65.0 fahrenheit and 275.0 fahrenheit
Cross-Sectional Height: 0.100 inches minimum and 0.106 inches maximum
Center Hole Diameter: 1.481 inches minimum and 1.493 inches maximum
Peripheral Diameter: 1.693 inches nominal
Elongation Percentage: 160 maximum
Criticality Code Justification: zzzw
Material: rubber
Material Document And Classification: mil-r-83248/2 mil spec all material responses
Departure From Cited Document: cleaning, packaging, and marking iaw mil-std-1330d

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
MS28775-128CP	O-Ring

FAQs

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

What is the FSCG of the NSN 5331-01-241-1939?

The FSCG of the NSN 5331-01-241-1939 is 5331

Does NSN 5331-01-241-1939 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 5331-01-241-1939 contain precious materials?

Precious metal content is unknown

Does NSN 5331-01-241-1939 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 5331-01-241-1939 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Tue, Sep 23, 1986