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AS5168B-331 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS5168B-331: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-00-451-6543, 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
AS5168B-331
NSN: 5331-00-451-6543
FSC: 5331 — O-ring
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
Part NumberAS5168B-331
NSN5331-00-451-6543
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS5168B-331 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 8
2-331N674-70Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
AS568B-331Reference document
Same NSN cross-reference
Reference document — Secondary reference
2-331 N674-7Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
5700031-068Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
0065234.53.63Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
0T65234.53.63Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS5168B-331?
AS5168B-331 is a O-RING.
What parts can replace AS5168B-331?
There are 8 known substitutes for AS5168B-331: 2-331N674-70, AS568B-331, 2-331 N674-7 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS5168B-331?
AS5168B-331 is cataloged in the U.S. Government catalog under NSN 5331-00-451-6543. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.