PartsTable
Technical Data Sheet
PartsTable / O-RING / 385971
385971 ✓ 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 HEAD,CRANKCASE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: ALUMINUM,CONE SHAPED,FLANGE MTD,THREE MTG EARS,2.725 IN. O/A LG,CENTER APERTURE 0.500 IN.

ID IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-166-8403, 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
385971
NSN: 5331-00-166-8403
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
general_characteristics_item_descriptionALUMINUM,CONE SHAPED,FLANGE MTD,THREE MTG EARS,2.725 IN. O/A LG,CENTER APERTURE 0.500 IN. ID IN
NSN5331-00-166-8403
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 385971 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
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 0.849 INCHES MINIMUM AND 0.869 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
OUTSIDE DIAMETER: 1.119 INCHES MINIMUM AND 1.155 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER0.849 INCHES MINIMUM AND 0.869 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
OUTSIDE DIAMETER1.119 INCHES MINIMUM AND 1.155 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
M83248/1-912Interchangeable
interchangeable cross-reference
interchangeable
516-5486651-F70Interchangeable
interchangeable cross-reference
interchangeable
04052333002424Interchangeable
interchangeable cross-reference
interchangeable
AS3581-212Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-83248/2-212Interchangeable
interchangeable cross-reference
interchangeable
NAS1594-212CPInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 385971?
385971 is a HEAD,CRANKCASE.
What parts can replace 385971?
There are 26 known substitutes for 385971: M83248/1-912, 516-5486651-F70, 04052333002424 and 23 more. Substitute compatibility should be verified for your specific system.
Is 385971 still available?
385971 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