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Technical Data Sheet
PartsTable / O-RING / 54904-50A
54904-50A ✓ 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. Key specifications include material: RUBBER SYNTHETIC, center_hole_diameter: 5.1665 INCHES MINIMUM AND 5.1765 INCHES MAXIMUM IN, cross-sectional_height: 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-542-5613, 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
54904-50A
NSN: 5331-00-542-5613
FSC: 5331 — O-RING
CAGE: 82796 — COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
center_hole_diameter5.1665 INCHES MINIMUM AND 5.1765 INCHES MAXIMUM IN
cross-sectional_height0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
NSN5331-00-542-5613
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 54904-50A 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
KEY FEATURES
•
MATERIAL: RUBBER SYNTHETIC
•
CENTER HOLE DIAMETER: 5.1665 INCHES MINIMUM AND 5.1765 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
CENTER HOLE DIAMETER5.1665 INCHES MINIMUM AND 5.1765 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
54904Interchangeable
interchangeable cross-reference
interchangeable
5180250Interchangeable
interchangeable cross-reference
interchangeable
PC5180250Interchangeable
interchangeable cross-reference
interchangeable
FRS T2420MInterchangeable
interchangeable cross-reference
interchangeable
T2420MInterchangeable
interchangeable cross-reference
interchangeable
54931Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54904-50A?
54904-50A is a O-RING.
What parts can replace 54904-50A?
There are 6 known substitutes for 54904-50A: 54904, 5180250, PC5180250 and 3 more. Substitute compatibility should be verified for your specific system.
Is 54904-50A still available?
54904-50A 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