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Technical Data Sheet
PartsTable / O-RING / X-74648 PIECE 77
X-74648 PIECE 77 ✓ 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 5331-01-228-0437, 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
X-74648 PIECE 77
NSN: 5331-01-228-0437
FSC: 5331 — O-RING
CAGE: 97370 — SPX FLOW US, LLC DBA SPX VALVES & CONTROLS (USA)
SPECIFICATIONS
Part NumberX-74648 PIECE 77
NSN5331-01-228-0437
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: X-74648 PIECE 77 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 7
6110-1444-4A2Interchangeable
interchangeable cross-reference
interchangeable
71132Interchangeable
interchangeable cross-reference
interchangeable
954136Interchangeable
interchangeable cross-reference
interchangeable
ORTAC-3/8IN.ID-1PLYInterchangeable
interchangeable cross-reference
interchangeable
TRB250Interchangeable
interchangeable cross-reference
interchangeable
D2376Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X-74648 PIECE 77?
X-74648 PIECE 77 is a O-RING.
What parts can replace X-74648 PIECE 77?
There are 7 known substitutes for X-74648 PIECE 77: 6110-1444-4A2, 71132, 954136 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for X-74648 PIECE 77?
X-74648 PIECE 77 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-228-0437. 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