Excess application of tape can prevent mating threads from fully engaging, reducing the shear point of the threads. Combining thread seal tape with a pipe dope compound can also overload threads. Also, internal overhangs of loose material may constrict a joint or slough off and form a foreign body that could jam a valve seat.
Excessive tape application can impede thread connection, lowering the shear point of threads. Combining thread seal tape with pipe dope compound can also cause excessive loading on threads. Moreover, internal overhangs of loose material may compress a joint or dislodge and form an obstruction that could block a valve seat.