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Technical Data Sheet
PartsTable / COMPONENT / FFT791-TY1-FM1-CL8-5/16X4 1/2
FFT791-TY1-FM1-CL8-5/16X4 1/2 ✓ 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 FFT791-TY1-FM1-CL8-5/16X4 1/2 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-052-2622, 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
FFT791-TY1-FM1-CL8-5/16X4 1/2
NSN: 5340-00-052-2622
FSC: 5340
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberFFT791-TY1-FM1-CL8-5/16X4 1/2
NSN5340-00-052-2622
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: FFT791-TY1-FM1-CL8-5/16X4 1/2 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: STEEL END PULL
•
EYE WIDTH: 0.625 INCHES NOMINAL IN
•
PINHOLE DIAMETER: 0.250 INCHES NOMINAL IN
•
END STYLE: CLEVIS AND CLOSED EYE
•
FURNISHED ITEMS AND QUANTITY: 1 EYEBOLT AND 1 CLEVIS AND 1 BOLT AND 1 COTTER PIN
•
NOMINAL THREAD SIZE: 0.312 INCHES BODY IN
•
THREAD CLASS: 1B BODY
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL END PULL
EYE WIDTH0.625 INCHES NOMINAL IN
PINHOLE DIAMETER0.250 INCHES NOMINAL IN
END STYLECLEVIS AND CLOSED EYE
MATERIALSTEEL BODY
FURNISHED ITEMS AND QUANTITY1 EYEBOLT AND 1 CLEVIS AND 1 BOLT AND 1 COTTER PIN
NOMINAL THREAD SIZE0.312 INCHES BODY IN
THREAD CLASS1B BODY
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 FORM AND 8 CLASS
BODY STYLEROUND OPEN BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
ASTM F 1145-5Upgraded Successor
successor cross-reference
successor
FF-T-791Upgraded Successor
successor cross-reference
successor
11157-1-64Upgraded Successor
successor cross-reference
successor
ASTM-F1145-I1B 1/2X9Upgraded Successor
successor cross-reference
successor
S-2510-1/2X9Upgraded Successor
successor cross-reference
successor
MS27954-5Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FFT791-TY1-FM1-CL8-5/16X4 1/2?
FFT791-TY1-FM1-CL8-5/16X4 1/2 is a FFT791-TY1-FM1-CL8-5/16X4 1/2.
What parts can replace FFT791-TY1-FM1-CL8-5/16X4 1/2?
There are 17 known substitutes for FFT791-TY1-FM1-CL8-5/16X4 1/2: ASTM F 1145-5, FF-T-791, 11157-1-64 and 14 more. Substitute compatibility should be verified for your specific system.
Is FFT791-TY1-FM1-CL8-5/16X4 1/2 still available?
FFT791-TY1-FM1-CL8-5/16X4 1/2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026