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Technical Data Sheet
PartsTable / O-RING / FF-S-86 TY VI 3 /8X7/8INLGUNC3A
FF-S-86 TY VI 3 /8X7/8INLGUNC3A ✓ 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 FF-S-86 TY VI 3 /8X7/8INLGUNC3A is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-166-1111, 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
FF-S-86 TY VI 3 /8X7/8INLGUNC3A
NSN: 5331-00-166-1111
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
Part NumberFF-S-86 TY VI 3 /8X7/8INLGUNC3A
NSN5331-00-166-1111
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: FF-S-86 TY VI 3 /8X7/8INLGUNC3A 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
•
TEMP RATING: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.347 INCHES MINIMUM AND 1.371 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.637 INCHES NOMINAL IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.347 INCHES MINIMUM AND 1.371 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.637 INCHES NOMINAL IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
AS3581-220Interchangeable
interchangeable cross-reference
interchangeable
AC180-220Interchangeable
interchangeable cross-reference
interchangeable
ARP568-220MILG23652TYPE2Interchangeable
interchangeable cross-reference
interchangeable
8126699-2Interchangeable
interchangeable cross-reference
interchangeable
9992-2Interchangeable
interchangeable cross-reference
interchangeable
35360064Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FF-S-86 TY VI 3 /8X7/8INLGUNC3A?
FF-S-86 TY VI 3 /8X7/8INLGUNC3A is a FF-S-86 TY VI 3 /8X7/8INLGUNC3A.
What parts can replace FF-S-86 TY VI 3 /8X7/8INLGUNC3A?
There are 26 known substitutes for FF-S-86 TY VI 3 /8X7/8INLGUNC3A: AS3581-220, AC180-220, ARP568-220MILG23652TYPE2 and 23 more. Substitute compatibility should be verified for your specific system.
Is FF-S-86 TY VI 3 /8X7/8INLGUNC3A still available?
FF-S-86 TY VI 3 /8X7/8INLGUNC3A 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