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CA121003-5 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

CA121003-5: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: ALUMINUM ALLOY, design_type: FRICTION, overall_diameter: 1.280 INCHES MAXIMUM IN, special_features: LANYARD ATTACH TO HEAD, end_item_identification: 4930-01-612-3541, round_cap_outside_surface_condition: RIBBED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-343-4333, 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
CA121003-5
NSN: 5340-01-343-4333
NIINs: 013434333, 016651828
FSC: 5340 — Hardware, Commercial
CAGE: 17549 — ITT CANNON (CAN)
SPECIFICATIONS
materialALUMINUM ALLOY
design_typeFRICTION
overall_diameter1.280 INCHES MAXIMUM IN
special_featuresLANYARD ATTACH TO HEAD
end_item_identification4930-01-612-3541
round_cap_outside_surface_conditionRIBBED
part_name_assigned_by_controlling_agencyCAP,RECEPTICLE
NSN5340-01-343-4333
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CA121003-5 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: 1.280 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY
•
ROUND CAP OUTSIDE SURFACE CONDITION: RIBBED
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER1.280 INCHES MAXIMUM IN
SPECIAL FEATURESLANYARD ATTACH TO HEAD
MATERIALALUMINUM ALLOY
ROUND CAP OUTSIDE SURFACE CONDITIONRIBBED
SUBSTITUTES & CROSS-REFERENCES 4
L835028A0450-03Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
5935001150Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
835028A0450-03Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
CIR16TFReference 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 CA121003-5?
CA121003-5 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace CA121003-5?
There are 4 known substitutes for CA121003-5: L835028A0450-03, 5935001150, 835028A0450-03 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CA121003-5?
CA121003-5 is cataloged in the U.S. Government catalog under NSN 5340-01-343-4333. 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.