PartsTable
Technical Data Sheet
2AT278 ✓ 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 SEAL,PLAIN is a the manufacturer industrial component. Key specifications include end_item_identification: HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS). This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-155-1772, 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
2AT278
NSN: 5330-01-155-1772
FSC: 5330
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
end_item_identificationHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
NSN5330-01-155-1772
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2AT278 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
229252Interchangeable
interchangeable cross-reference
interchangeable
000208-1013Interchangeable
interchangeable cross-reference
interchangeable
000-208-1013-RInterchangeable
interchangeable cross-reference
interchangeable
8251Interchangeable
interchangeable cross-reference
interchangeable
375224AInterchangeable
interchangeable cross-reference
interchangeable
224-375Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2AT278?
2AT278 is a SEAL,PLAIN.
What parts can replace 2AT278?
There are 9 known substitutes for 2AT278: 229252, 000208-1013, 000-208-1013-R and 6 more. Substitute compatibility should be verified for your specific system.
Is 2AT278 still available?
2AT278 is currently cancelled.
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