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Technical Data Sheet
PartsTable / COMPONENT / 6G20099
6G20099 ✓ 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 OVERALL, hole_diameter: 0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 4.125 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.125 INCHES NOMINAL IN, surface_treatment: ZINC OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-599-4453, 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
6G20099
NSN: 5330-00-599-4453
FSC: 5330
CAGE: 23382 — FWD SEAGRAVE HOLDINGS LP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter4.125 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.125 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
bolt_hole_quantity4
bolt_circle_diameter3.500 INCHES NOMINAL IN
cross-sectional_thickness0.083 INCHES NOMINAL IN
cross-sectional_shape_styleRECTANGULAR METAL
material_document_and_classificationQQ-S-636 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5330-00-599-4453
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6G20099 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
•
BOLT CIRCLE DIAMETER: 3.500 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 4
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-636 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR METAL
•
CROSS-SECTIONAL THICKNESS: 0.083 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 4.125 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BOLT CIRCLE DIAMETER3.500 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-636 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
CROSS-SECTIONAL THICKNESS0.083 INCHES NOMINAL IN
OUTSIDE DIAMETER4.125 INCHES NOMINAL IN
APERTURE DIAMETER3.125 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORCIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
3124570Interchangeable
interchangeable cross-reference
interchangeable
31928Interchangeable
interchangeable cross-reference
interchangeable
15245Interchangeable
interchangeable cross-reference
interchangeable
756-1805Interchangeable
interchangeable cross-reference
interchangeable
372D101Interchangeable
interchangeable cross-reference
interchangeable
234-0056-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6G20099?
6G20099 is a GASKET.
What parts can replace 6G20099?
There are 20 known substitutes for 6G20099: 3124570, 31928, 15245 and 17 more. Substitute compatibility should be verified for your specific system.
Is 6G20099 still available?
6G20099 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026