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Technical Data Sheet
PartsTable / COMPONENT / 85663A
85663A ✓ 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 outside_diameter: 3.000 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 2.500 INCHES NOMINAL IN, cross-sectional_thickness: 0.062 INCHES NOMINAL 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 5330-00-298-0794, 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
85663A
NSN: 5330-00-298-0794
FSC: 5330
CAGE: 15723 — D N K (USA)
SPECIFICATIONS
materialASBESTOS AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR CORK AND RUBBER POLYSULFIDE CLASS T OR RUBBER NATURAL OR RUBBER SYNTHETIC OR CORK AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
outside_diameter3.000 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter2.500 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-G-12803,+1141-A MIL SPEC 1ST MATERIAL RESPONSE OR MIL-G-12803,+2236-A MIL SPEC 2ND MATERIAL RESPONSE OR MIL-G-12803,+2243-A MIL SPEC 3RD MATERIAL RESPONSE OVERALL
NSN5330-00-298-0794
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 85663A 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
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL: CORK AND RUBBER SYNTHETIC OVERALL
•
APERTURE DIAMETER: 2.500 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
STYLE DESIGNATORCIRCULAR
MATERIALCORK AND RUBBER SYNTHETIC OVERALL
APERTURE DIAMETER2.500 INCHES NOMINAL IN
OUTSIDE DIAMETER3.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
G718Interchangeable
interchangeable cross-reference
interchangeable
C73-MInterchangeable
interchangeable cross-reference
interchangeable
100766Interchangeable
interchangeable cross-reference
interchangeable
1951409Interchangeable
interchangeable cross-reference
interchangeable
247117Interchangeable
interchangeable cross-reference
interchangeable
5065-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 85663A?
85663A is a GASKET.
What parts can replace 85663A?
There are 11 known substitutes for 85663A: G718, C73-M, 100766 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 85663A?
85663A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-298-0794. 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