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Technical Data Sheet
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1090078 — 1090078

✓ Government record, cited
CATERPILLAR INC DIV CATERPILLAR DEFENSE · ORING SEAL
PRODUCT OVERVIEW

1090078: 1090078.

The 1090078 is a CATERPILLAR INC DIV CATERPILLAR DEFENSE industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-456-5728, 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
1090078
NSN: 5331-01-456-5728
FSC: 5331 — O-ring
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
Part Number1090078
ManufacturerCATERPILLAR INC DIV CATERPILLAR DEFENSE
NSN5331-01-456-5728
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1090078 MFR: CATERPILLAR INC DIV CATERPILLAR DEFENSE ⚠ 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
END ITEM IDENTIFICATIONLOGISTICS SUPPORT VESSEL
SUBSTITUTES & CROSS-REFERENCES 2
12KP789Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
CV182440Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1090078?
1090078 is a 1090078 manufactured by CATERPILLAR INC DIV CATERPILLAR DEFENSE.
What parts can replace 1090078?
There are 2 known substitutes for 1090078: 12KP789, CV182440. Substitute compatibility should be verified for your specific system.
What is the NSN for 1090078?
1090078 is cataloged in the U.S. Government catalog under NSN 5331-01-456-5728. This indicates validated use in U.S. government and defense supply chains.
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