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MS28778-211 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MS28778-211: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, outside_diameter: 1.074 INCHES NOMINAL IN, center_hole_diameter: 0.786 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN, cross-sectional_height: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-585-0184, 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
MS28778-211
NSN: 5331-00-585-0184
FSC: 5331 — O-ring
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SYNTHETIC
outside_diameter1.074 INCHES NOMINAL IN
center_hole_diameter0.786 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN
cross-sectional_height0.125 INCHES NOMINAL IN
NSN5331-00-585-0184
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28778-211 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.125 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.074 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.786 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
OUTSIDE DIAMETER1.074 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.786 INCHES MINIMUM AND 0.806 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC
SUBSTITUTES & CROSS-REFERENCES 3
SP100-16Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS568-211Reference document
Same NSN cross-reference
Reference document — Secondary reference
ARP568-211Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS28778-211?
MS28778-211 is a O-RING.
What parts can replace MS28778-211?
There are 3 known substitutes for MS28778-211: SP100-16, AS568-211, ARP568-211. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28778-211?
MS28778-211 is cataloged in the U.S. Government catalog under NSN 5331-00-585-0184. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.