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PartsTable / COMPONENT / C489-1
C489-1 ✓ 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 AND RUBBER FLUOROSILICONE CLASS FQ OVERALL, outside_diameter: 5.875 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.875 INCHES NOMINAL IN, surface_treatment: ANODIZE OVERALL, gage_ring_thickness: 0.080 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-964-0087, 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
C489-1
NSN: 5330-00-964-0087
FSC: 5330
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 AND RUBBER FLUOROSILICONE CLASS FQ OVERALL
outside_diameter5.875 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.875 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
bolt_hole_quantity8
gage_ring_thickness0.080 INCHES NOMINAL IN
bolt_circle_diameter4.870 INCHES MINIMUM AND 4.880 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_thickness0.120 INCHES NOMINAL IN
largest_bolt_hole_diameter0.289 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
NSN5330-00-964-0087
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C489-1 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: ALUMINUM ALLOY 6061 AND RUBBER FLUOROSILICONE CLASS FQ OVERALL
•
SMALLEST BOLT HOLE DIAMETER: 0.228 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ANODIZE OVERALL
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-25988 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
GAGE RING THICKNESS: 0.080 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALALUMINUM ALLOY 6061 AND RUBBER FLUOROSILICONE CLASS FQ OVERALL
SMALLEST BOLT HOLE DIAMETER0.228 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OVERALL
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-25988 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
GAGE RING THICKNESS0.080 INCHES NOMINAL IN
APERTURE DIAMETER3.875 INCHES NOMINAL IN
ELONGATION PERCENTAGE125 MAXIMUM
LARGEST BOLT HOLE DIAMETER0.289 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
4943Interchangeable
interchangeable cross-reference
interchangeable
658319Interchangeable
interchangeable cross-reference
interchangeable
S983-02Interchangeable
interchangeable cross-reference
interchangeable
657319Interchangeable
interchangeable cross-reference
interchangeable
657719Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C489-1?
C489-1 is a GASKET.
What parts can replace C489-1?
There are 5 known substitutes for C489-1: 4943, 658319, S983-02 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C489-1?
C489-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-964-0087. 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