Knowledge

What is P.T.F.E ?

P.T.F.E (Polytetrafluoroethylene) is a completely fluorinated polymer manufactured by free radical polymerization of tetrafluoroethylene. With a linear molecular structure of repeating –CF-CF2- units, P.T.F.E is a crystalline polymer with a melting point of about 621oF (327oC), density ranging from 2.13 to 2.19 g. P.T.F.E has exceptional resistance to chemicals, its dielectric constant is 2.1 which makes it an excellent electrical insulator. Its coefficient of friction is lower than almost any other material. It also has a high oxygen level and heat resistance.

Polytetrafluoroethylene (P.T.F.E) resin is in a class of paraffinic polymers that have some or all of the hydrogen replaced by fluoride. The original P.T.F.E resin was invented by DuPont in 1938 and called Teflon® (TEFLON IS A REGISTERED TRADEMARK OF DUPONT). While all Teflon® is P.T.F.E, not all P.T.F.E is Teflon®.

Advantages of Using P.T.F.E Thread Seal Tapes :

• P.T.F.E thread seal tapes can be used as a sealant in all types of threaded pipe materials like iron, steel, copper, aluminum, special steel, plastics including PVC pipes. Apart from these, the most important characteristics of P.T.F.E tapes to be used as a thread sealant are the tensile strength properties and the density. Performance of the tape is determined by the balance of tensile strength and elongation between the longitudinal and transverse directions & the percentage elongation at break in the transverse direction. Good drape is the ability of the thread seal tape to conform closely to the pipe threads without tearing.
• P.T.F.E thread sealant tapes ensure long term high reliable service and easy disassembly. The tapes provide permanently sealed joints which will outlast the pipe under any service condition. The inherent lubricant properties of the tape relieve falling, binding & sticking often encountered with other types of thread sealants. The tape is so pliable that it seals in the roots of the pipe threads and it remains complaint at high and low temperatures and high pressures.
• No acids, alkalis, or organic solvents and chemicals will chemically attack seals made from P.T.F.E tape sealant. Since the tape does not harden with age, the joints do not freeze enabling easy disassembly of equipments. This tape can be used with toxic flammable and absorbent materials.

APPLICATIONS OF P.T.F.E THREAD SEAL TAPES :

CHEMICAL PLANTS	GAS CYLINDERS	HYDRAULIC AND PNEUMATIC EQUIPMENTS	PAPER INDUSTRIES
DOMESTIC PLUMBING	PHARMACEUTICAL INDUSTRIES	MEDICAL EQUIPMENTS	AUTO INDUSTRIES
REFINERIES	FOOD PROCESSING UNITS	CYROGENIC EQUIPMENTS	COMPRESSOR MANUFACTURING AND AIR CONDITIONING

TECHNICAL PARAMETERS:

THICKNESS:	0.075-0.3 MM
TEMPERATURE:	-240oC TO +260oC
ELONGATION:	165% TO 200%
PRESSURE:	170 BAR
PH RANGE :	0 TO 14