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Technical Data Sheet
PartsTable / COMPONENT / 251390S
251390S ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include hardness_rating: 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL, outside_diameter: 6.860 INCHES MINIMUM AND 6.920 INCHES MAXIMUM IN, style_designator: CIRCULAR, aperture_diameter: 6.400 INCHES MINIMUM AND 6.440 INCHES MAXIMUM IN, cross-sectional_thickness: 0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-039-9514, 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
251390S
NSN: 5330-01-039-9514
FSC: 5330
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU OVERALL
hardness_rating75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL
outside_diameter6.860 INCHES MINIMUM AND 6.920 INCHES MAXIMUM IN
style_designatorCIRCULAR
aperture_diameter6.400 INCHES MINIMUM AND 6.440 INCHES MAXIMUM IN
end_item_identificationFIRE PUMPS; TICONDEROGA CLASS CG (47); FORRESTAL CLASS CV; NIMITZ CLASS CVN; KIDD CLASS DDG; OLIVER PERRY CLASS FFG; WASP CLASS LHD; EMORY L. LAND CLASS AS; SUPPLY CLASS AOE
cross-sectional_thickness0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationASTM D2000 5BG810ABE1E3F1 ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN5330-01-039-9514
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 251390S 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: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU OVERALL
•
HARDNESS RATING: 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL
•
OUTSIDE DIAMETER: 6.860 INCHES MINIMUM AND 6.920 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
CROSS-SECTIONAL THICKNESS: 0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000 5BG810ABE1E3F1 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
APERTURE DIAMETER: 6.400 INCHES MINIMUM AND 6.440 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU OVERALL
HARDNESS RATING75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL
OUTSIDE DIAMETER6.860 INCHES MINIMUM AND 6.920 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000 5BG810ABE1E3F1 ASSN STD ALL MATERIAL RESPONSES OVERALL
END ITEM IDENTIFICATIONFIRE PUMPS; TICONDEROGA CLASS CG (47); FORRESTAL CLASS CV; NIMITZ CLASS CVN; KIDD CLASS DDG; OLIVER PERRY CLASS FFG; WASP CLASS LHD; EMORY L. LAND CLASS AS; SUPPLY CLASS AOE
APERTURE DIAMETER6.400 INCHES MINIMUM AND 6.440 INCHES MAXIMUM IN
STYLE DESIGNATORCIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
91236A544Interchangeable
interchangeable cross-reference
interchangeable
02101392Interchangeable
interchangeable cross-reference
interchangeable
802206Interchangeable
interchangeable cross-reference
interchangeable
251390Interchangeable
interchangeable cross-reference
interchangeable
251376000Interchangeable
interchangeable cross-reference
interchangeable
251390000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 251390S?
251390S is a GASKET.
What parts can replace 251390S?
There are 7 known substitutes for 251390S: 91236A544, 02101392, 802206 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 251390S?
251390S is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-039-9514. 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