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The LEGRIS 3142 12 00 is a push-to-connect plug fitting designed to cap off 12mm outside-diameter tubing in pneumatic and fluid-handling systems. Constructed from glass-reinforced nylon, this plug accepts a tube insertion without tools and creates a secure seal using a built-in nitrile O-ring. It is rated for working pressures up to 290 psi and carries a vacuum rating of 28 in-Hg, making it suitable for both pressurized and vacuum line applications. Licensed plumbers, pipefitters, and industrial maintenance technicians install these fittings when a pneumatic or fluid circuit branch needs to be plugged and isolated during service or commissioning.
This fitting is used in compressed air distribution, pneumatic control circuits, and low-pressure fluid lines where a tube port must be terminated cleanly. The push-to-connect design speeds up installation and simplifies field service when circuits are reconfigured. The glass-reinforced nylon body handles moderate-pressure environments found in light industrial, commercial HVAC pneumatic controls, and process equipment. It is sold and packaged individually, making it a practical replacement or spare for single-point service calls.
Designed as an OEM-style push-to-connect plug for 12mm OD metric tubing used in pneumatic control and fluid-handling circuits. No specific compatible system or model information was provided by the manufacturer for this SKU.
Installation is performed by pipefitters, pneumatic technicians, or industrial maintenance personnel. Depressurize and isolate the circuit fully before inserting or removing the fitting. Ensure the tube end is cut square, deburred, and clean before insertion to achieve a proper seal. Follow applicable codes and the equipment manufacturer guidelines for maximum allowable working pressure in the circuit.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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