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4302146 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4302146: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include design_type: MOLDED, overall_height: 20.1 MILLIMETERS MINIMUM AND 21.1 MILLIMETERS MAXIMUM MM, overall_diameter: 17.0 MILLIMETERS MINIMUM AND 21.0 MILLIMETERS MAXIMUM MM, special_features: LINK CHAIN CONNECTED TO TOP OF CAP AND TO BOTTOM PLATE, end_item_identification: 2320-01-653-6516, round_cap_outside_surface_condition: SMOOTH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-679-9258, 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
4302146
NSN: 5340-01-679-9258
FSC: 5340 — Hardware, Commercial
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
design_typeMOLDED
overall_height20.1 MILLIMETERS MINIMUM AND 21.1 MILLIMETERS MAXIMUM MM
overall_diameter17.0 MILLIMETERS MINIMUM AND 21.0 MILLIMETERS MAXIMUM MM
special_featuresLINK CHAIN CONNECTED TO TOP OF CAP AND TO BOTTOM PLATE
end_item_identification2320-01-653-6516
round_cap_outside_surface_conditionSMOOTH
NSN5340-01-679-9258
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4302146 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: MOLDED
•
OVERALL DIAMETER: 17.0 MILLIMETERS MINIMUM AND 21.0 MILLIMETERS MAXIMUM MM
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT20.1 MILLIMETERS MINIMUM AND 21.1 MILLIMETERS MAXIMUM MM
DESIGN TYPEMOLDED
OVERALL DIAMETER17.0 MILLIMETERS MINIMUM AND 21.0 MILLIMETERS MAXIMUM MM
SPECIAL FEATURESLINK CHAIN CONNECTED TO TOP OF CAP AND TO BOTTOM PLATE
END ITEM IDENTIFICATION2320-01-653-6516
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4302146?
4302146 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What is the NSN for 4302146?
4302146 is cataloged in the U.S. Government catalog under NSN 5340-01-679-9258. 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.