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Technical Data Sheet
N42529 ✓ 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

SEAT,HELICAL COMPRESSION SPRING. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-370-1746, 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
N42529
NSN: 5340-01-370-1746
FSC: 5340
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
Part NumberN42529
NSN5340-01-370-1746
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N42529 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
42529Upgraded Successor
successor cross-reference
successor
42529-1Upgraded Successor
successor cross-reference
successor
4523Interchangeable
IBM 4523 8GB (2x 4GB) Memory Kit PC2-5300P
interchangeable
SMC523343Interchangeable
interchangeable cross-reference
interchangeable
V250C129Interchangeable
interchangeable cross-reference
interchangeable
2529Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N42529?
N42529 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace N42529?
There are 7 known substitutes for N42529: 42529, 42529-1, 4523 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N42529?
N42529 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-370-1746. This indicates validated use in U.S. government and defense supply chains.
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