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Technical Data Sheet
PartsTable / O-RING / E0540 3-904
E0540 3-904 ✓ 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 color: BLACK, material: RUBBER SYNTHETIC OVERALL, temp_rating: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 80.0 SHORE DUROMETER A MAXIMUM OVERALL, outside_diameter: 0.484 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN, center_hole_diameter: 0.351 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-486-7109, 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
E0540 3-904
NSN: 5331-00-486-7109
FSC: 5331 — O-RING
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
colorBLACK
materialRUBBER SYNTHETIC OVERALL
temp_rating-70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating80.0 SHORE DUROMETER A MAXIMUM OVERALL
outside_diameter0.484 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
center_hole_diameter0.351 INCHES NOMINAL IN
cross-sectional_height0.072 INCHES NOMINAL IN
cross-sectional_shape_styleO-RING
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
NSN5331-00-486-7109
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: E0540 3-904 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
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL
•
TEMP RATING: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
CENTER HOLE DIAMETER: 0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.484 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL
TEMP RATING-70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
CENTER HOLE DIAMETER0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.484 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
990404-904ESInterchangeable
interchangeable cross-reference
interchangeable
69490B904Interchangeable
interchangeable cross-reference
interchangeable
3-4E540-80Interchangeable
interchangeable cross-reference
interchangeable
E0540 3-904Interchangeable
interchangeable cross-reference
interchangeable
2267F17PC16Interchangeable
interchangeable cross-reference
interchangeable
3-904E540-80Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E0540 3-904?
E0540 3-904 is a O-RING.
What parts can replace E0540 3-904?
There are 10 known substitutes for E0540 3-904: 990404-904ES, 69490B904, 3-4E540-80 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E0540 3-904?
E0540 3-904 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-486-7109. 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