Thread seal tape is a polytetrafluoroethylene (PTFE) film cut to specified widths for use in sealing pipe threads. Also known as plumber’s tape, PTFE tape, tape dope, it is popularly but incorrectly called Teflon tape.

Typically the tape is wrapped around a pipe’s thread three times before it is screwed into place. It is commonly used commercially in such applications as pressurized water systems, central heating systems, and air compression equipment.


TENGLONG Sealing design, manufacture and supply PTFE tape to many industries since 1979. Our commitment to quality has always been directly linked to the customers, who have consistently been the driving force behind all our strategic planning and achievement. Our objective continues to be the identification of the customers’ requirements and the satisfactory fulfillment of those requirements within acceptable quality standards.

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