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Technical Data Sheet
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N8639 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

N8639: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include securing_device_type: SPECIAL, end_item_identification: W/S:LOADER SCOOP. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-250-5332, 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
N8639
NSN: 5340-01-250-5332
FSC: 5340 — Hardware, Commercial
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
securing_device_typeSPECIAL
end_item_identificationW/S:LOADER SCOOP
NSN5340-01-250-5332
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N8639 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
•
SECURING DEVICE TYPE: SPECIAL
TECHNICAL CHARACTERISTICS
SECURING DEVICE TYPESPECIAL
END ITEM IDENTIFICATIONW/S:LOADER SCOOP
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
1300-1862Reference 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 N8639?
N8639 is a COVER,ACCESS.
What parts can replace N8639?
There is 1 known substitute for N8639: 1300-1862. Substitute compatibility should be verified for your specific system.
What is the NSN for N8639?
N8639 is cataloged in the U.S. Government catalog under NSN 5340-01-250-5332. This indicates validated use in U.S. government and defense supply chains.
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