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142583 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The COVER,UNLOADER is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-014-2583, 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
142583
NSN: 5340-00-014-2583
FSC: 5340
CAGE: K4285 — TEREX EQUIPMENT LTD DIV CONSTRUCTION EQUIPMENT (GBR)
SPECIFICATIONS
general_characteristics_item_descriptionBRASS,5.281 IN. OD,1.500 IN. O/A H,6 HOLES EQUALLY SPACED ON 4.750 IN. BOLT CIRCLE,0.312 IN. DIA BOLT HOLES,3 EQUALLY SPACED LUGS,0.687 IN. LG,0.500 IN. W,1 CENTER HOLE,0.312-20 THD IN
NSN5340-00-014-2583
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 142583 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
•
STYLE DESIGNATOR: PIN
•
MATERIAL: STEEL
•
WIDTH: 0.188 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
STOCK DIAMETER: 0.048 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORPIN
MATERIALSTEEL
WIDTH0.188 INCHES NOMINAL IN
OVERALL HEIGHT0.625 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
STOCK DIAMETER0.048 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
142583Interchangeable
interchangeable cross-reference
interchangeable
185431PC261Interchangeable
interchangeable cross-reference
interchangeable
166262PC127Interchangeable
interchangeable cross-reference
interchangeable
AS4855Interchangeable
interchangeable cross-reference
interchangeable
AS4855D02Interchangeable
interchangeable cross-reference
interchangeable
33504Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 142583?
142583 is a COVER,UNLOADER.
What parts can replace 142583?
There are 19 known substitutes for 142583: 142583, 185431PC261, 166262PC127 and 16 more. Substitute compatibility should be verified for your specific system.
Is 142583 still available?
142583 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026