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Technical Data Sheet
PartsTable / O-RING / 3751445
3751445 ✓ 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 part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-948-6482, 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
3751445
NSN: 5331-00-948-6482
FSC: 5331 — O-RING
CAGE: 20149 — INTRUPA MFG CO (USA)
SPECIFICATIONS
Part Number3751445
NSN5331-00-948-6482
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3751445 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 19
875752Interchangeable
interchangeable cross-reference
interchangeable
A218307Interchangeable
interchangeable cross-reference
interchangeable
154126Interchangeable
interchangeable cross-reference
interchangeable
622-3/8Interchangeable
interchangeable cross-reference
interchangeable
4720002541801Interchangeable
interchangeable cross-reference
interchangeable
154129Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3751445?
3751445 is a O-RING.
What parts can replace 3751445?
There are 19 known substitutes for 3751445: 875752, A218307, 154126 and 16 more. Substitute compatibility should be verified for your specific system.
Is 3751445 still available?
3751445 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026