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PartsTable / COMPONENT / FC-425
FC-425 ✓ 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 PULLEY,TIMING BELT is a the manufacturer industrial component. Key specifications include hub_type: SETSCREW, material: ALUMINUM ALLOY 2024, bore_type: SPECIFIED, face_type: DOUBLE ROW SPROCKET TEETH, face_width: 0.187 INCHES NOMINAL IN, design_type: FRICTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-001-4912, 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
FC-425
NSN: 5340-00-001-4912
FSC: 5340
CAGE: 15819 — SINCLAIR & RUSH, INC. DBA SINCLAIR & RUSH INC (USA)
SPECIFICATIONS
hub_typeSETSCREW
materialALUMINUM ALLOY 2024
bore_typeSPECIFIED
face_typeDOUBLE ROW SPROCKET TEETH
face_width0.187 INCHES NOMINAL IN
design_typeFRICTION
hub_diameter0.375 INCHES NOMINAL IN
bore_diameter0.187 INCHES NOMINAL IN
overall_length0.406 INCHES NOMINAL IN
overall_diameter4.875 INCHES NOMINAL IN
special_featuresCOLOR YELLOW
surface_treatmentANODIZE
NSN5340-00-001-4912
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: FC-425 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 4.625 INCHES NOMINAL IN
•
INSIDE DIAMETER LENGTH: 0.344 INCHES NOMINAL IN
•
OVERALL DIAMETER: 4.875 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
•
DESIGN TYPE: FRICTION
TECHNICAL CHARACTERISTICS (FLIS)
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED4.625 INCHES NOMINAL IN
INSIDE DIAMETER LENGTH0.344 INCHES NOMINAL IN
SPECIAL FEATURESCOLOR YELLOW
OVERALL DIAMETER4.875 INCHES NOMINAL IN
MATERIALPLASTIC
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
DESIGN TYPEFRICTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
500Upgraded Successor
successor cross-reference
successor
31-01-0500Upgraded Successor
successor cross-reference
successor
8168559Upgraded Successor
successor cross-reference
successor
500SCUpgraded Successor
successor cross-reference
successor
901Upgraded Successor
successor cross-reference
successor
530789Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FC-425?
FC-425 is a PULLEY,TIMING BELT.
What parts can replace FC-425?
There are 10 known substitutes for FC-425: 500, 31-01-0500, 8168559 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FC-425?
FC-425 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-001-4912. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026