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Technical Data Sheet
PartsTable / COMPONENT / K678031-7
K678031-7 ✓ 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 STRAP,RETAINING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-478-7915, 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
K678031-7
NSN: 5340-01-478-7915
FSC: 5340
CAGE: 84955 — KAMAN AEROSPACE CORPORATION DBA AIR VEHICLES & MRO DIVISION (USA)
SPECIFICATIONS
Part NumberK678031-7
NSN5340-01-478-7915
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: K678031-7 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
1866-1Interchangeable
interchangeable cross-reference
interchangeable
6230-1Interchangeable
interchangeable cross-reference
interchangeable
BUNA-N-223Interchangeable
interchangeable cross-reference
interchangeable
861467Interchangeable
interchangeable cross-reference
interchangeable
986217Interchangeable
interchangeable cross-reference
interchangeable
986217-1BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K678031-7?
K678031-7 is a STRAP,RETAINING.
What parts can replace K678031-7?
There are 19 known substitutes for K678031-7: 1866-1, 6230-1, BUNA-N-223 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for K678031-7?
K678031-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-478-7915. 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