Square Head Pipe Plugs

Square Head Pipe Plugs

Square head pipe plugs, also called square head filler plugs, are designed to seal the end of threaded pipes to dead end the flow of fluid when you no longer need to use the opening. Square head pipe plugs feature a square head that protrudes above the surface of the mating assembly. These can be tightened and loosened using an adjustable wrench or a pipe plug square socket. They are commonly found in plumbing, agricultural, industrial, and automotive applications.