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04-21393 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

04-21393: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: RUBBER, overall_diameter: 30.0 MILLIMETERS MINIMUM AND 32.0 MILLIMETERS MAXIMUM MM, special_features: COLOR BLACK WITH -65 DEGREE TO 250 DEGREE F TEMPERATURE, part_name_assigned_by_controlling_agency: CAP, TUBE 18.3 MM ID MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-595-3493, 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
04-21393
NSN: 5340-01-595-3493
FSC: 5340 — Hardware, Commercial
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialRUBBER
overall_diameter30.0 MILLIMETERS MINIMUM AND 32.0 MILLIMETERS MAXIMUM MM
special_featuresCOLOR BLACK WITH -65 DEGREE TO 250 DEGREE F TEMPERATURE
part_name_assigned_by_controlling_agencyCAP, TUBE 18.3 MM ID MM
NSN5340-01-595-3493
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 04-21393 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
•
OVERALL DIAMETER: 30.0 MILLIMETERS MINIMUM AND 32.0 MILLIMETERS MAXIMUM MM
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER30.0 MILLIMETERS MINIMUM AND 32.0 MILLIMETERS MAXIMUM MM
SPECIAL FEATURESCOLOR BLACK WITH -65 DEGREE TO 250 DEGREE F TEMPERATURE
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP, TUBE 18.3 MM ID MM
MATERIALRUBBER
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 2
A029F708Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
F8JL-8A500-BAReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 04-21393?
04-21393 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 04-21393?
There are 2 known substitutes for 04-21393: A029F708, F8JL-8A500-BA. Substitute compatibility should be verified for your specific system.
What is the NSN for 04-21393?
04-21393 is cataloged in the U.S. Government catalog under NSN 5340-01-595-3493. This indicates validated use in U.S. government and defense supply chains.
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