Complete with control knob. Viton® O-rings on PTEF shaft are protected with two precision PTFE wipers (or as shown in the second picture, O-ring is inside shaft).The plug has a machined-in integral PTFE tip O-ring to make the primary...

Complete with control knob Viton® O-rings on PTEF shaft are protected with two precision Teflon® wipers (or as shown in the second picture O-ring is inside shaft) The plug has a machined-in integral PTFE tip O-ring to make the primary...