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Technical Data Sheet
40053-4 PC 6 ✓ 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

RETAINER,HELICAL COMPRESSION SPR. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-512-6727, 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
40053-4 PC 6
NSN: 5340-01-512-6727
FSC: 5340
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
Part Number40053-4 PC 6
NSN5340-01-512-6727
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40053-4 PC 6 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 19
400534Upgraded Successor
successor cross-reference
successor
1635701Upgraded Successor
successor cross-reference
successor
6505NCM228425Upgraded Successor
successor cross-reference
successor
452-4000Interchangeable
interchangeable cross-reference
interchangeable
12100Interchangeable
interchangeable cross-reference
interchangeable
121565Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40053-4 PC 6?
40053-4 PC 6 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 40053-4 PC 6?
There are 19 known substitutes for 40053-4 PC 6: 400534, 1635701, 6505NCM228425 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40053-4 PC 6?
40053-4 PC 6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-512-6727. This indicates validated use in U.S. government and defense supply chains.
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