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Technical Data Sheet
0991-FF1 ✓ 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 MOUNT,RESILIENT,UTILITY 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 5340-01-543-6829, 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
0991-FF1
NSN: 5340-01-543-6829
FSC: 5340
CAGE: 36MV0 — THE SHYFT GROUP USA, INC DBA THE SHYFT GROUP USA, INC (USA)
SPECIFICATIONS
Part Number0991-FF1
NSN5340-01-543-6829
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0991-FF1 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 15
60-02-1Interchangeable
interchangeable cross-reference
interchangeable
11M4C-AA0-A1GH146Interchangeable
interchangeable cross-reference
interchangeable
21-140Interchangeable
interchangeable cross-reference
interchangeable
600-GP-21Interchangeable
interchangeable cross-reference
interchangeable
600C21NHInterchangeable
interchangeable cross-reference
interchangeable
600Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0991-FF1?
0991-FF1 is a MOUNT,RESILIENT,UTILITY.
What parts can replace 0991-FF1?
There are 15 known substitutes for 0991-FF1: 60-02-1, 11M4C-AA0-A1GH146, 21-140 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 0991-FF1?
0991-FF1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-543-6829. This indicates validated use in U.S. government and defense supply chains.
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