Designed for simple and reliable testing of pipe and tubing. Bolt Type plugs feature a neoprene seal - the only part of the plug that comes in contact with the tube I.D. Simply install into the open end of the pipe or tube and tighten the large compression nut to expand the seal element; then begin testing. Operating pressures to 250 PsiG (17.2 BarG), depending on the plug size. Sizes for 0.28” to 10½” (7.11-266.7mm). Shown with thread protector.