LEGRIS Compression Fitting Coupling: 8 mm OD x 4 mm OD Fitting Size, Metric x Compression

A LEGRIS compression fitting coupling connects two tubes or pipes in pneumatic, hydraulic, or fluid-handling systems. It provides a leak-tight seal without welding or soldering, making it ideal for industrial applications requiring reliable, reusable connections in instrumentation, controls, and general plant maintenance.

The LEGRIS 0101 04 56 is a standard sleeve brass compression fitting with a Metric x Compression connection type. It accommodates an 8 mm OD tube on one end and a 4 mm OD tube on the other, both in brass construction. This coupling is designed for moderate-pressure fluid and air lines.

3G Electric supplies genuine LEGRIS compression fittings worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for accurate sourcing and support across 14 industrial departments, including combustion, pumps, and controls.

To install a LEGRIS brass compression fitting, slide the nut and sleeve onto the tube, insert the tube fully into the fitting body, then tighten the nut by hand followed by a wrench until snug. Avoid over-tightening to prevent tube deformation. Always verify tube OD matches the fitting size (8 mm or 4 mm) before assembly.