The Blucher Compression Socket Plug is a stainless steel socket plug designed for use in food, beverage, and pharmaceutical processing. It has a 1-1/2" NPT thread connection and is made from 316 stainless steel for corrosion resistance. The plug has a flat face and knurled knob handle to allow hand tightening. It can withstand temperatures up to 250°F. The socket plug provides a watertight seal and allows quick opening and closing of pipe connections for inspection, cleaning or process control.