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Technical Data Sheet
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3904340 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3904340: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include peripheral_shape_style: BAND TYPE, end_item_identification: 4230-01-184-7913. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-238-0161, 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
3904340
NSN: 5340-01-238-0161
FSC: 5340 — Hardware, Commercial
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
peripheral_shape_styleBAND TYPE
end_item_identification4230-01-184-7913
NSN5340-01-238-0161
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3904340 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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PERIPHERAL SHAPE STYLE: BAND TYPE
TECHNICAL CHARACTERISTICS
PERIPHERAL SHAPE STYLEBAND TYPE
END ITEM IDENTIFICATION4230-01-184-7913
SUBSTITUTES & CROSS-REFERENCES 1
3903909Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3904340?
3904340 is a COVER,ACCESS.
What parts can replace 3904340?
There is 1 known substitute for 3904340: 3903909. Substitute compatibility should be verified for your specific system.
What is the NSN for 3904340?
3904340 is cataloged in the U.S. Government catalog under NSN 5340-01-238-0161. This indicates validated use in U.S. government and defense supply chains.
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