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Technical Data Sheet
PartsTable / O-RING / MS28775-443ES
MS28775-443ES ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-815-2450, 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
MS28775-443ES
NSN: 5331-00-815-2450
FSC: 5331 — O-RING
CAGE: H2313 — ERIKS B.V. (NLD)
SPECIFICATIONS
Part NumberMS28775-443ES
NSN5331-00-815-2450
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28775-443ES 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
AN6227B-70Interchangeable
interchangeable cross-reference
interchangeable
AN6227-70Interchangeable
interchangeable cross-reference
interchangeable
575-2200-1487115REVAPC30Interchangeable
interchangeable cross-reference
interchangeable
A17024Interchangeable
interchangeable cross-reference
interchangeable
A-23998-1Interchangeable
interchangeable cross-reference
interchangeable
900120Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28775-443ES?
MS28775-443ES is a O-RING.
What parts can replace MS28775-443ES?
There are 21 known substitutes for MS28775-443ES: AN6227B-70, AN6227-70, 575-2200-1487115REVAPC30 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28775-443ES?
MS28775-443ES is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-815-2450. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026