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Technical Data Sheet
42078 PIECE 35 ✓ 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,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-090-1607, 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
42078 PIECE 35
NSN: 5340-01-090-1607
FSC: 5340
CAGE: 31923 — TODD COMBUSTION INC (USA)
SPECIFICATIONS
materialSTEEL
NSN5340-01-090-1607
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 42078 PIECE 35 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
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
K-MHC801D-BCUpgraded Successor
successor cross-reference
successor
23-043Upgraded Successor
successor cross-reference
successor
5031Interchangeable
interchangeable cross-reference
interchangeable
252-12-30-161Interchangeable
interchangeable cross-reference
interchangeable
31117Interchangeable
interchangeable cross-reference
interchangeable
382 10-24 UNCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 42078 PIECE 35?
42078 PIECE 35 is a COVER,ACCESS.
What parts can replace 42078 PIECE 35?
There are 17 known substitutes for 42078 PIECE 35: K-MHC801D-BC, 23-043, 5031 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 42078 PIECE 35?
42078 PIECE 35 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-090-1607. This indicates validated use in U.S. government and defense supply chains.
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