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PartsTable / COMPONENT / T/M 85278A, ITEM NO. 20, PAGE 22
T/M 85278A, ITEM NO. 20, PAGE 22 ✓ 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 T/M 85278A, ITEM NO. 20, PAGE 22 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 5330-01-433-8452, 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
T/M 85278A, ITEM NO. 20, PAGE 22
NSN: 5330-01-433-8452
FSC: 5330
CAGE: 57716 — WILSHIRE CORP (USA)
SPECIFICATIONS
Part NumberT/M 85278A, ITEM NO. 20, PAGE 22
NSN5330-01-433-8452
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: T/M 85278A, ITEM NO. 20, PAGE 22 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 12
31762-120V60CInterchangeable
interchangeable cross-reference
interchangeable
FPR42UN20Interchangeable
interchangeable cross-reference
interchangeable
31762Interchangeable
interchangeable cross-reference
interchangeable
7-31762Interchangeable
interchangeable cross-reference
interchangeable
8134567Interchangeable
interchangeable cross-reference
interchangeable
FC866Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T/M 85278A, ITEM NO. 20, PAGE 22?
T/M 85278A, ITEM NO. 20, PAGE 22 is a T/M 85278A, ITEM NO. 20, PAGE 22.
What parts can replace T/M 85278A, ITEM NO. 20, PAGE 22?
There are 12 known substitutes for T/M 85278A, ITEM NO. 20, PAGE 22: 31762-120V60C, FPR42UN20, 31762 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T/M 85278A, ITEM NO. 20, PAGE 22?
T/M 85278A, ITEM NO. 20, PAGE 22 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-433-8452. 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