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5904303-1 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5904303-1: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC POLYVINYL CHLORIDE (PVC), design_type: FRICTION, overall_diameter: 0.449 INCHES NOMINAL IN, special_features: COLOR BLACK, inside_diameter_length: 1.000 INCHES NOMINAL IN, round_cap_outside_surface_condition: SMOOTH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-213-5724, 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
5904303-1
NSN: 5340-01-213-5724
FSC: 5340 — Hardware, Commercial
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC POLYVINYL CHLORIDE (PVC)
design_typeFRICTION
overall_diameter0.449 INCHES NOMINAL IN
special_featuresCOLOR BLACK
inside_diameter_length1.000 INCHES NOMINAL IN
round_cap_outside_surface_conditionSMOOTH
tube_outside_diameter_for_which_designed0.343 INCHES NOMINAL IN
NSN5340-01-213-5724
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5904303-1 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
•
DESIGN TYPE: FRICTION
•
OVERALL DIAMETER: 0.449 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.343 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYVINYL CHLORIDE (PVC)
•
INSIDE DIAMETER LENGTH: 1.000 INCHES NOMINAL IN
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER0.449 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.343 INCHES NOMINAL IN
SPECIAL FEATURESCOLOR BLACK
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC)
INSIDE DIAMETER LENGTH1.000 INCHES NOMINAL IN
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
SUBSTITUTES & CROSS-REFERENCES 1
343-16Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 5904303-1?
5904303-1 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 5904303-1?
There is 1 known substitute for 5904303-1: 343-16. Substitute compatibility should be verified for your specific system.
What is the NSN for 5904303-1?
5904303-1 is cataloged in the U.S. Government catalog under NSN 5340-01-213-5724. 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.