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The PARKER A6CAP-MG is a push-to-connect tube cap designed to seal the open end of a 3/8-inch OD tube in pneumatic or fluid distribution systems. Constructed from polyoxymethylene (POM), a high-strength acetal resin, the fitting delivers a rated working pressure of 300 psi. The push-to-connect mechanism allows for tool-free installation and removal, making it a practical choice for service technicians who need to isolate or cap lines quickly during system work. This tan-colored fitting is a single-piece component sold individually.
This tube cap is suited for use in light industrial, commercial, and mechanical system applications where 3/8-inch OD tubing must be temporarily or permanently capped. Typical uses include sealing unused ports in pneumatic control circuits, HVAC pneumatic lines, and fluid handling assemblies. The POM construction offers good chemical resistance and dimensional stability across a range of service temperatures, making it appropriate for both air and compatible fluid media applications.
Designed as a push-to-connect style tube cap compatible with 3/8-inch OD tubing in pneumatic and fluid distribution systems.
Installation is performed by a qualified technician or plumber. Before capping any line, depressurize the system completely and verify pressure has reached zero before handling fittings. Insert the tubing squarely into the fitting until it seats fully to ensure a leak-free connection. To release, depress the collet collar while withdrawing the tube. Follow applicable local codes and the system manufacturer guidelines for fitting use in pressurized service.
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