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Technical Data Sheet
PartsTable / COMPONENT / 517C
517C ✓ 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

VALVE,REGULATING,FLUID PRESSURE. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-429-9661, 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
517C
NSN: 5340-00-429-9661
FSC: 5340
CAGE: 31245 — TEREX USA, LLC DBA TEREX EQUIPMENT SERVICES (USA)
SPECIFICATIONS
Part Number517C
NSN5340-00-429-9661
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 517C 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: IRON CAST
•
BODY OUTSIDE DIAMETER: 5.125 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 4.562 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
END HOLE DIAMETER: 1.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON CAST
OVERALL HEIGHT1.500 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER5.125 INCHES NOMINAL IN
BODY INSIDE DIAMETER4.562 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
END HOLE DIAMETER1.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
V6248Upgraded Successor
successor cross-reference
successor
VN80Upgraded Successor
successor cross-reference
successor
6831Upgraded Successor
successor cross-reference
successor
1501Upgraded Successor
successor cross-reference
successor
1511N95Upgraded Successor
successor cross-reference
successor
5175Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 517C?
517C is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 517C?
There are 7 known substitutes for 517C: V6248, VN80, 6831 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 517C?
517C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-429-9661. 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