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Technical Data Sheet
PartsTable / O-RING / 3-905 FKM
3-905 FKM ✓ 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 5331-01-719-0215, 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
3-905 FKM
NSN: 5331-01-719-0215
FSC: 5331 — O-RING
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
Part Number3-905 FKM
NSN5331-01-719-0215
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3-905 FKM 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 21
3905Interchangeable
interchangeable cross-reference
interchangeable
72-6970-960Interchangeable
interchangeable cross-reference
interchangeable
M83248/1-905Interchangeable
interchangeable cross-reference
interchangeable
924284C1Interchangeable
interchangeable cross-reference
interchangeable
5715MKInterchangeable
interchangeable cross-reference
interchangeable
F400E00303Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-905 FKM?
3-905 FKM is a O-RING.
What parts can replace 3-905 FKM?
There are 21 known substitutes for 3-905 FKM: 3905, 72-6970-960, M83248/1-905 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-905 FKM?
3-905 FKM is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-719-0215. 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