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PartsTable / COMPONENT / CAPLUG-4W
CAPLUG-4W ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: PLASTIC, POLYETHYLENE (PP), length_under_shoulder: 0.380 INCHES NOMINAL IN, open_end_inside_diameter: 0.418 INCHES NOMINAL IN, closed_end_overall_diameter: 0.173 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-242-6245, 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
CAPLUG-4W
NSN: 5340-01-242-6245
FSC: 5340
CAGE: 99017 — CAPLUGS LLC DBA MOKON DIV CAPLUGS (USA)
SPECIFICATIONS
materialPLASTIC, POLYETHYLENE (PP)
length_under_shoulder0.380 INCHES NOMINAL IN
open_end_inside_diameter0.418 INCHES NOMINAL IN
closed_end_overall_diameter0.173 INCHES NOMINAL IN
NSN5340-01-242-6245
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CAPLUG-4W 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
•
OPEN END INSIDE DIAMETER: 0.418 INCHES NOMINAL IN
•
LENGTH UNDER SHOULDER: 0.380 INCHES NOMINAL IN
•
CLOSED END OVERALL DIAMETER: 0.173 INCHES NOMINAL IN
•
MATERIAL: PLASTIC, POLYETHYLENE (PP)
TECHNICAL CHARACTERISTICS (FLIS)
OPEN END INSIDE DIAMETER0.418 INCHES NOMINAL IN
LENGTH UNDER SHOULDER0.380 INCHES NOMINAL IN
CLOSED END OVERALL DIAMETER0.173 INCHES NOMINAL IN
MATERIALPLASTIC, POLYETHYLENE (PP)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
GGG-W-00651 TY3CLBInterchangeable
interchangeable cross-reference
interchangeable
W4Interchangeable
interchangeable cross-reference
interchangeable
5365D16Interchangeable
interchangeable cross-reference
interchangeable
0323-0130Interchangeable
interchangeable cross-reference
interchangeable
TYPE 4 SIZE 4Interchangeable
interchangeable cross-reference
interchangeable
TYPE 4 - 4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CAPLUG-4W?
CAPLUG-4W is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace CAPLUG-4W?
There are 9 known substitutes for CAPLUG-4W: GGG-W-00651 TY3CLB, W4, 5365D16 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CAPLUG-4W?
CAPLUG-4W is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-242-6245. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026