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The LEGRIS 3126 04 00 is a push-to-connect plug fitting designed to seal and cap pneumatic or fluid tubing with a 5/32 inch outside diameter. Constructed from nylon, this plug provides a rated working pressure of 290 psi. The push-on design allows fast, tool-free installation — the fitting locks onto the tube end without threading or crimping. It is a compact, lightweight component suited for inline termination of unused ports or tube runs in pneumatic control systems. Licensed plumbing, HVAC, and industrial mechanics install these fittings during panel builds, system modifications, and service calls requiring a clean line termination.
This plug fitting is suited for light industrial and commercial pneumatic plumbing applications where 5/32 inch OD nylon tubing is used. Common install scenarios include terminating unused branches in pneumatic control circuits, air distribution manifolds, and low-pressure fluid conveyance lines. The nylon construction makes it compatible with many standard pneumatic media including compressed air and inert gases at working pressures up to 290 psi.
Designed as a standard push-to-connect replacement plug for pneumatic and fluid control systems using 5/32 inch OD tubing.
Installation is performed by qualified pneumatic or plumbing technicians. Depressurize the system and verify zero line pressure before removing or inserting any push-connect fitting. Ensure tube ends are cut cleanly and squarely — a deformed or burred tube end can compromise the collet seal and cause leakage under pressure. Verify the fitting is fully seated by applying slight pull-back tension to confirm the collet has locked onto the tube.
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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