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0421C10-1520-01 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

0421C10-1520-01: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC VINYL, design_type: MOLDED, overall_diameter: 4.910 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: CAP,BLACK VINYL, tube_outside_diameter_for_which_designed: 4.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-652-5600, 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
0421C10-1520-01
NSN: 5340-01-652-5600
FSC: 5340 — Hardware, Commercial
CAGE: 20722 — THE ENTWISTLE COMPANY LLC (USA)
SPECIFICATIONS
materialPLASTIC VINYL
design_typeMOLDED
overall_diameter4.910 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyCAP,BLACK VINYL
tube_outside_diameter_for_which_designed4.750 INCHES NOMINAL IN
NSN5340-01-652-5600
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0421C10-1520-01 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: 4.910 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 4.750 INCHES NOMINAL IN
•
MATERIAL: PLASTIC VINYL
TECHNICAL CHARACTERISTICS
DESIGN TYPEMOLDED
OVERALL DIAMETER4.910 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED4.750 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP,BLACK VINYL
MATERIALPLASTIC VINYL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 0421C10-1520-01?
0421C10-1520-01 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What is the NSN for 0421C10-1520-01?
0421C10-1520-01 is cataloged in the U.S. Government catalog under NSN 5340-01-652-5600. 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.