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634813 ✓ 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: STEEL AND ASBESTOS OVERALL, outside_diameter: 0.875 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.641 INCHES NOMINAL IN, cross-sectional_thickness: 0.062 INCHES NOMINAL IN, cross-sectional_shape_style: METAL AND NONMETALLIC MATERIALS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-7404, 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
634813
NSN: 5330-00-641-7404
FSC: 5330
CAGE: 16460 — MARINE ENGINE SPECIALTIES DIV OF MESCO TECTONICS INC (USA)
SPECIFICATIONS
materialSTEEL AND ASBESTOS OVERALL
outside_diameter0.875 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.641 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND NONMETALLIC MATERIALS
NSN5330-00-641-7404
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 634813 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 THICKNESS: 0.062 INCHES NOMINAL IN
•
APERTURE DIAMETER: 0.641 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: METAL AND NONMETALLIC MATERIALS
•
MATERIAL: STEEL AND ASBESTOS OVERALL
•
STYLE DESIGNATOR: CIRCULAR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
APERTURE DIAMETER0.641 INCHES NOMINAL IN
OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEMETAL AND NONMETALLIC MATERIALS
MATERIALSTEEL AND ASBESTOS OVERALL
STYLE DESIGNATORCIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
LS3207-2Interchangeable
interchangeable cross-reference
interchangeable
ASTM B221Interchangeable
interchangeable cross-reference
interchangeable
2086Interchangeable
interchangeable cross-reference
interchangeable
829258Interchangeable
interchangeable cross-reference
interchangeable
BX18-4Interchangeable
interchangeable cross-reference
interchangeable
5221Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 634813?
634813 is a GASKET.
What parts can replace 634813?
There are 24 known substitutes for 634813: LS3207-2, ASTM B221, 2086 and 21 more. Substitute compatibility should be verified for your specific system.
Is 634813 still available?
634813 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