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B40688 — SEAL FUEL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

B40688: SEAL FUEL.

The SEAL FUEL is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: 0.460 IN. NOM ID,0.939 IN.

NOM OD,0.492 IN. NOM W IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-780-2159, 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
B40688
NSN: 5330-00-780-2159
FSC: 5330 — Packing and Gasket Materials
CAGE: 77842 — EATON CORPORATION DBA EATON INOAC DIV EATON (USA)
SPECIFICATIONS
general_characteristics_item_description0.460 IN. NOM ID,0.939 IN. NOM OD,0.492 IN. NOM W IN
NSN5330-00-780-2159
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B40688 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: 0.460 IN. NOM ID,0.939 IN. NOM OD,0.492 IN. NOM W IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION0.460 IN. NOM ID,0.939 IN. NOM OD,0.492 IN. NOM W IN
SUBSTITUTES & CROSS-REFERENCES 1
3-3B002C0-7Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 B40688?
B40688 is a SEAL FUEL.
What parts can replace B40688?
There is 1 known substitute for B40688: 3-3B002C0-7. Substitute compatibility should be verified for your specific system.
What is the NSN for B40688?
B40688 is cataloged in the U.S. Government catalog under NSN 5330-00-780-2159. This indicates validated use in U.S. government and defense supply chains.
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