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4012490 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4012490: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include design_type: SOLID, fsc_application_data: GAS TURBINE AND JET ENGINE,AIRCRAFT COMPONENTS, end_item_identification: W/S: SUPPORT EQUIPMENT, C-5 AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-382-7442, 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
4012490
NSN: 5340-00-382-7442
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
design_typeSOLID
fsc_application_dataGAS TURBINE AND JET ENGINE,AIRCRAFT COMPONENTS
end_item_identificationW/S: SUPPORT EQUIPMENT, C-5 AIRCRAFT
NSN5340-00-382-7442
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4012490 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
•
FSC APPLICATION DATA: GAS TURBINE AND JET ENGINE,AIRCRAFT COMPONENTS
•
DESIGN TYPE: SOLID
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAGAS TURBINE AND JET ENGINE,AIRCRAFT COMPONENTS
DESIGN TYPESOLID
END ITEM IDENTIFICATIONW/S: SUPPORT EQUIPMENT, C-5 AIRCRAFT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4012490?
4012490 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 4012490?
4012490 is cataloged in the U.S. Government catalog under NSN 5340-00-382-7442. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.