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Technical Data Sheet
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1121178 — 1121178

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1121178: 1121178.

The 1121178 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-418-4863, 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
1121178
NSN: 5330-00-418-4863
FSC: 5330 — Packing and Gasket Materials
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
Part Number1121178
NSN5330-00-418-4863
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1121178 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
SUBSTITUTES & CROSS-REFERENCES 2
5417063Reference document
Same NSN cross-reference
Reference document — Secondary reference
SA50135Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1121178?
1121178 is a 1121178.
What parts can replace 1121178?
There are 2 known substitutes for 1121178: 5417063, SA50135. Substitute compatibility should be verified for your specific system.
What is the NSN for 1121178?
1121178 is cataloged in the U.S. Government catalog under NSN 5330-00-418-4863. This indicates validated use in U.S. government and defense supply chains.
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