PartsTable
Technical Data Sheet
PartsTable / O-RING / 42311S
42311S ✓ 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 5331-01-265-6697, 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
42311S
NSN: 5331-01-265-6697
FSC: 5331 — O-RING
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
Part Number42311S
NSN5331-01-265-6697
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 42311S 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 8
38945Interchangeable
interchangeable cross-reference
interchangeable
PGF8946Interchangeable
interchangeable cross-reference
interchangeable
PGF12365Interchangeable
interchangeable cross-reference
interchangeable
530-10048-1Interchangeable
interchangeable cross-reference
interchangeable
XRPTInterchangeable
interchangeable cross-reference
interchangeable
62044Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 42311S?
42311S is a O-RING.
What parts can replace 42311S?
There are 8 known substitutes for 42311S: 38945, PGF8946, PGF12365 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 42311S?
42311S is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-265-6697. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026