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GC803 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

GC803: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: ALUMINUM ALLOY 6061, design_type: FRICTION, overall_diameter: 0.812 INCHES MAXIMUM IN, surface_treatment: CHROMATE, round_cap_outside_surface_condition: KNURLED, material_document_and_classification: ALLOY 6061-T6 NATIONAL SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-333-6783, 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
GC803
NSN: 5340-01-333-6783
FSC: 5340 — Hardware, Commercial
CAGE: 99447 — COOPER INTERCONNECT, INC. DBA COOPER INTERCONNECT DIV INTERCONNECT (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
design_typeFRICTION
overall_diameter0.812 INCHES MAXIMUM IN
surface_treatmentCHROMATE
round_cap_outside_surface_conditionKNURLED
material_document_and_classificationALLOY 6061-T6 NATIONAL SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-333-6783
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GC803 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
•
DESIGN TYPE: FRICTION
•
OVERALL DIAMETER: 0.812 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ALLOY 6061-T6 NATIONAL SPEC SINGLE MATERIAL RESPONSE
•
SURFACE TREATMENT: CHROMATE
•
MATERIAL: ALUMINUM ALLOY 6061
•
ROUND CAP OUTSIDE SURFACE CONDITION: KNURLED
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER0.812 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONALLOY 6061-T6 NATIONAL SPEC SINGLE MATERIAL RESPONSE
SURFACE TREATMENTCHROMATE
MATERIALALUMINUM ALLOY 6061
ROUND CAP OUTSIDE SURFACE CONDITIONKNURLED
SUBSTITUTES & CROSS-REFERENCES 1
61452Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GC803?
GC803 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace GC803?
There is 1 known substitute for GC803: 61452. Substitute compatibility should be verified for your specific system.
What is the NSN for GC803?
GC803 is cataloged in the U.S. Government catalog under NSN 5340-01-333-6783. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.