Lokring – Pipe and Tube Fittings


Flange Fitting

Lokring fittings give you the ability to fabricate and install or repair (cut-out and replace) 1/4″ – 4″ carbon steel and stainless steel pipe and 1/4″ – 2 1/2″ stainless steel tubing without purging, flushing, welding and other hot work issues. Use LOKRING with the security of knowing these fittings qualify to ASME, Lloyd’s Register, API, ABS and that they comply with AS 2885. Having been approved and included in many Companies global piping specs; these fittings are available in Australia from PipeServ. LOKRING pipe and stainless steel tube fittings feature patented Elastic Strain Preload (ESP) technology resulting in leak free fittings for gas and liquid services. The tamper proof fittings are designed as a permanent joint or pipeline coupling without the use of welding and no hot work permits required. The innovative technology behind LOKRING fittings provide a range of benefits including increased productivity through efficient installation, improved safety with the elimination of welding and greater overall quality.


The Axial Movement of the Swage Rings During Installation Causes Radial Compression of the Sealing Teeth on the Outside Surface of the Pipe or Tube.


Lokring Fitting

Standard Coupling

LOKRING fittings are manufactured and available in stainless steel, carbon steel, low temperature carbon steel (per 333 pipe spec), copper nickel and brass materials. The innovative products have proven to be reliable across a range of industries including:

  • Offshore Production
  • Facilities and Refineries
  • Chemical Processing Industries
  • Power and Generation
  • Steel Manufacturing Industries
  • Pulp and Paper Mills
  • Shipbuilding and Repair

PipeServ can supply fittings and tooling directly to your company and train your staff or contractors as well as install the fittings using certified installers qualified in LOKRING specifications.

This short movie below will demonstrate the installation.