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Technical Data Sheet
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1B7401 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1B7401: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-00-354-1691, 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
1B7401
NSN: 5340-00-354-1691
FSC: 5340 — Hardware, Commercial
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
Part Number1B7401
NSN5340-00-354-1691
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1B7401 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
SUBSTITUTES & CROSS-REFERENCES 5
427308Reference document
Same NSN cross-reference
Reference document — Secondary reference
2UUA065Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
17007BSReference document
Same NSN cross-reference
Reference document — Secondary reference
7086714Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BB1011Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1B7401?
1B7401 is a COVER,ACCESS.
What parts can replace 1B7401?
There are 5 known substitutes for 1B7401: 427308, 2UUA065, 17007BS and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B7401?
1B7401 is cataloged in the U.S. Government catalog under NSN 5340-00-354-1691. This indicates validated use in U.S. government and defense supply chains.
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