PartsTable
Technical Data Sheet
938434663U01 ✓ 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 O-RING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-368-4665, 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
938434663U01
NSN: 5331-01-368-4665
FSC: 5331 — O-RING
CAGE: A0106 — ISOTTA FRASCHINI MOTORI SPA (ITA)
SPECIFICATIONS
Part Number938434663U01
NSN5331-01-368-4665
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 938434663U01 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
J221P239Interchangeable
interchangeable cross-reference
interchangeable
B-631-12505-40Interchangeable
interchangeable cross-reference
interchangeable
5331PL1673263Interchangeable
interchangeable cross-reference
interchangeable
2-239V747-75Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 938434663U01?
938434663U01 is a O-RING.
What parts can replace 938434663U01?
There are 4 known substitutes for 938434663U01: J221P239, B-631-12505-40, 5331PL1673263 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 938434663U01?
938434663U01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-368-4665. This indicates validated use in U.S. government and defense supply chains.
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