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Technical Data Sheet
PartsTable / O-RING / 3-904 E540-80
3-904 E540-80 ✓ 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 temp_rating: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL OVERALL, peripheral_diameter: 0.484 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN, center_hole_diameter: 0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN, cross-sectional_shape_style: O-RING, criticality_code_justification: ZZZY. 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
3-904 E540-80
NSN: 5331-00-486-7109
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
temp_rating-70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating80.0 SHORE DUROMETER A NOMINAL OVERALL
peripheral_diameter0.484 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
center_hole_diameter0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
cross-sectional_shape_styleO-RING
criticality_code_justificationZZZY
cross_section_outside_diameter0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
reference_number_differentiating_characteristicsWEAPON SYSTEM ESSENTIAL
NSN5331-00-486-7109
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3-904 E540-80 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 3-904 E540-80?
3-904 E540-80 is a O-RING.
What parts can replace 3-904 E540-80?
There are 10 known substitutes for 3-904 E540-80: 990404-904ES, 69490B904, 3-4E540-80 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-904 E540-80?
3-904 E540-80 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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PartsTable Design LLC · partstable.com
Last verified: July 2026