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253-1858 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

253-1858: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include special_features: FOUND ON DOOR GP - CAB, end_item_identification: 3805-01-557-4003,LOADER,BACKHOE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-569-2903, 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
253-1858
NSN: 5340-01-569-2903
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
special_featuresFOUND ON DOOR GP - CAB
end_item_identification3805-01-557-4003,LOADER,BACKHOE
NSN5340-01-569-2903
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 253-1858 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESFOUND ON DOOR GP - CAB
END ITEM IDENTIFICATION3805-01-557-4003,LOADER,BACKHOE
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
CV170100DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 253-1858?
253-1858 is a COVER,ACCESS.
What parts can replace 253-1858?
There is 1 known substitute for 253-1858: CV170100D. Substitute compatibility should be verified for your specific system.
What is the NSN for 253-1858?
253-1858 is cataloged in the U.S. Government catalog under NSN 5340-01-569-2903. This indicates validated use in U.S. government and defense supply chains.
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