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E0740 3-908 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

E0740 3-908: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER ETHYLENE-PROPYLENE CLASS EPM, end_item_identification: VALVE ASSY 1X2"PILOT OPERATED RELIEF VALVE TYPE3000SERIES. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-642-7963, 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
E0740 3-908
NSN: 5331-01-642-7963
FSC: 5331 — O-ring
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER ETHYLENE-PROPYLENE CLASS EPM
end_item_identificationVALVE ASSY 1X2"PILOT OPERATED RELIEF VALVE TYPE3000SERIES
NSN5331-01-642-7963
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: E0740 3-908 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 ETHYLENE-PROPYLENE CLASS EPM
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONVALVE ASSY 1X2"PILOT OPERATED RELIEF VALVE TYPE3000SERIES
MATERIALRUBBER ETHYLENE-PROPYLENE CLASS EPM
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 2
E0692-3-908Reference document
Same NSN cross-reference
Reference document — Secondary reference
11.2219-1111PC89Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is E0740 3-908?
E0740 3-908 is a O-RING.
What parts can replace E0740 3-908?
There are 2 known substitutes for E0740 3-908: E0692-3-908, 11.2219-1111PC89. Substitute compatibility should be verified for your specific system.
What is the NSN for E0740 3-908?
E0740 3-908 is cataloged in the U.S. Government catalog under NSN 5331-01-642-7963. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.