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F321756 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

F321756: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-273-2223, 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
F321756
NSN: 5331-01-273-2223
FSC: 5331 — O-ring
CAGE: 65254 — BRUNSWICK CORP US MARINE DIV (USA)
SPECIFICATIONS
Part NumberF321756
NSN5331-01-273-2223
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: F321756 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 1
321756Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is F321756?
F321756 is a O-RING.
What parts can replace F321756?
There is 1 known substitute for F321756: 321756. Substitute compatibility should be verified for your specific system.
What is the NSN for F321756?
F321756 is cataloged in the U.S. Government catalog under NSN 5331-01-273-2223. This indicates validated use in U.S. government and defense supply chains.
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