PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 8331256
8331256 ✓ 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 material: ASBESTOS OVERALL, hole_diameter: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 3.188 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, aperture_diameter: 1.375 INCHES NOMINAL IN, lubrication_method: IMPREGNATED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-640-9583, 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
8331256
NSN: 5330-00-640-9583
FSC: 5330
CAGE: 00000
SPECIFICATIONS
materialASBESTOS OVERALL
hole_diameter0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width3.188 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
aperture_diameter1.375 INCHES NOMINAL IN
bolt_hole_quantity2
lubrication_methodIMPREGNATED
bolt_circle_diameter2.375 INCHES NOMINAL IN
lubrication_materialGRAPHITE OVERALL
outside_corner_radius0.406 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-640-9583
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8331256 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
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
BOLT CIRCLE DIAMETER: 2.375 INCHES NOMINAL IN
•
APERTURE DIAMETER: 1.375 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
SIDE RADIUS FROM GASKET CENTER: 1.000 INCHES NOMINAL IN
•
LUBRICATION MATERIAL: GRAPHITE OVERALL
•
OUTSIDE CORNER RADIUS: 0.406 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
BOLT CIRCLE DIAMETER2.375 INCHES NOMINAL IN
APERTURE DIAMETER1.375 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
SIDE RADIUS FROM GASKET CENTER1.000 INCHES NOMINAL IN
LUBRICATION MATERIALGRAPHITE OVERALL
OUTSIDE CORNER RADIUS0.406 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
OVERALL WIDTH3.188 INCHES NOMINAL IN
MATERIALASBESTOS OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
497212Interchangeable
interchangeable cross-reference
interchangeable
672-0502-000Interchangeable
interchangeable cross-reference
interchangeable
17254Interchangeable
interchangeable cross-reference
interchangeable
DS-921808Interchangeable
interchangeable cross-reference
interchangeable
921808Interchangeable
interchangeable cross-reference
interchangeable
12130Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8331256?
8331256 is a GASKET.
What parts can replace 8331256?
There are 25 known substitutes for 8331256: 497212, 672-0502-000, 17254 and 22 more. Substitute compatibility should be verified for your specific system.
Is 8331256 still available?
8331256 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