PartsTable
Technical Data Sheet
PartsTable / COMPONENT / C490-1
C490-1 ✓ 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: ALUMINUM ALLOY 6061 OVERALL, outside_diameter: 4.700 INCHES NOMINAL IN, special_features: ADHERE TO FIRE DETECTION TROT BOX DOOR WITH RTV732 OR EQUIVALENT, style_designator: CIRCULAR, aperture_diameter: 3.150 INCHES NOMINAL IN, surface_treatment: ANODIZE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-965-6951, 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
C490-1
NSN: 5330-00-965-6951
FSC: 5330
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
outside_diameter4.700 INCHES NOMINAL IN
special_featuresADHERE TO FIRE DETECTION TROT BOX DOOR WITH RTV732 OR EQUIVALENT
style_designatorCIRCULAR
aperture_diameter3.150 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
gage_ring_thickness0.080 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
end_item_identificationASTUTE CLASS SUBMARINE
cross-sectional_thickness0.123 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
material_document_and_classificationQQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5330-00-965-6951
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C490-1 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
•
OUTSIDE DIAMETER: 4.700 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: ALUMINUM ALLOY 6061 OVERALL
•
SURFACE TREATMENT: ANODIZE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL THICKNESS: 0.123 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.150 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: METAL AND SYNTHETIC RUBBER
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER4.700 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALALUMINUM ALLOY 6061 OVERALL
SURFACE TREATMENTANODIZE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL THICKNESS0.123 INCHES NOMINAL IN
APERTURE DIAMETER3.150 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEMETAL AND SYNTHETIC RUBBER
GAGE RING THICKNESS0.080 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
STYLE DESIGNATORCIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
36213Interchangeable
interchangeable cross-reference
interchangeable
AN4030-4Interchangeable
interchangeable cross-reference
interchangeable
P105535Interchangeable
interchangeable cross-reference
interchangeable
359708C1Interchangeable
interchangeable cross-reference
interchangeable
40304Interchangeable
interchangeable cross-reference
interchangeable
02261-0280-11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy C490-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is C490-1?
C490-1 is a GASKET.
What parts can replace C490-1?
There are 23 known substitutes for C490-1: 36213, AN4030-4, P105535 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C490-1?
C490-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-965-6951. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — C490-1

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026