Legris 3180 04 00 Push-to-connect Plug Fitting 4mm

Product Description

The LEGRIS 3180 04 00 is a push-to-connect plug fitting designed to seal off open tube ends in pneumatic and fluid-handling systems. Constructed from glass-reinforced nylon with a nitrile O-ring, it accepts tubing with a 4mm outside diameter and holds a maximum working pressure of 290 psi. The plug installs without tools by pressing the tube end into the fitting until it seats, making it a fast, reliable option for capping unused ports or branch lines. Licensed trades and maintenance technicians working with compressed air, light hydraulic, or low-pressure fluid circuits install this type of fitting routinely during system builds and service calls.

This plug fitting is suited for residential and light commercial pneumatic systems, automation equipment, fluid-transfer lines, and instrumentation tubing. Its glass-reinforced nylon body handles moderate pressure and resists many common industrial fluids, while the nitrile O-ring provides a secure, leak-resistant seal. It is also rated for vacuum service up to 28 inches of mercury, making it usable in both positive-pressure and vacuum circuit applications where a capped port is required.

Key Features

• Push-to-connect design seals 4mm OD tubing without tools or additional fittings
• Glass-reinforced nylon body for lightweight, corrosion-resistant construction
• Nitrile O-ring provides a leak-resistant seal compatible with many pneumatic and fluid media
• Rated to 290 psi maximum working pressure
• Vacuum-rated to 28 inches of mercury for dual positive-pressure and vacuum circuit use

Compatibility

Designed as an OEM-style push-to-connect plug for pneumatic and fluid-handling systems using 4mm outside-diameter tubing.

Installation Notes

Installation of push-to-connect fittings should be performed by qualified technicians familiar with pneumatic or fluid-system safety practices. Depressurize and lock out the system before removing or installing any fitting. Ensure tubing ends are cut squarely and deburred before insertion to achieve a proper seal. Verify that system pressure and media are within the rated limits of this fitting before returning the circuit to service.