MS28900-20 — O-RING

✓ Government record, cited

— · ORING SEAL

PRODUCT OVERVIEW

MS28900-20: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.033 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN, center_hole_diameter: 0.969 INCHES MINIMUM AND 0.994 INCHES MAXIMUM IN, cross-sectional_height: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-221-0373, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

MS28900-20

NSN: 5331-00-221-0373
FSC: 5331 — O-ring
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

SPECIFICATIONS

material	RUBBER CHLOROPRENE CLASS CR
hardness_rating	70.0 SHORE DUROMETER A NOMINAL
outside_diameter	1.033 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN
center_hole_diameter	0.969 INCHES MINIMUM AND 0.994 INCHES MAXIMUM IN
cross-sectional_height	0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
NSN	5331-00-221-0373

COMPONENT DIAGRAM

KEY FEATURES

•

CROSS-SECTIONAL HEIGHT: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN

•

OUTSIDE DIAMETER: 1.033 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN

•

HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL

•

CENTER HOLE DIAMETER: 0.969 INCHES MINIMUM AND 0.994 INCHES MAXIMUM IN

•

MATERIAL: RUBBER CHLOROPRENE CLASS CR

TECHNICAL CHARACTERISTICS

CROSS-SECTIONAL HEIGHT	0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
OUTSIDE DIAMETER	1.033 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN
HARDNESS RATING	70.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER	0.969 INCHES MINIMUM AND 0.994 INCHES MAXIMUM IN
MATERIAL	RUBBER CHLOROPRENE CLASS CR

SUBSTITUTES & CROSS-REFERENCES 8

5-139 C557-70Reference document

Same NSN cross-reference

Reference document — Secondary reference

920-2347Reference document

Same NSN cross-reference

Reference document — Secondary reference

B-20SR533-70Reference document

Same NSN cross-reference

Reference document — Secondary reference

MS28900Reference document

Same NSN cross-reference

Reference document — Identification reference

PRP920-2347Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

C0557 5-139Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MS28900-20?

MS28900-20 is a O-RING.

What parts can replace MS28900-20?

There are 8 known substitutes for MS28900-20: 5-139 C557-70, 920-2347, B-20SR533-70 and 5 more. Substitute compatibility should be verified for your specific system.

What is the NSN for MS28900-20?

MS28900-20 is cataloged in the U.S. Government catalog under NSN 5331-00-221-0373. This indicates validated use in U.S. government and defense supply chains.

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MS28900-20 — O-RING

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