What was discovered by accident is now used to prevent accidents.Doctor Plunkett was working on non-toxic alternatives on refrigerant in DuPont. In one of his experiments he stored around 100 pounds of TFE-tetrafluorethylene gas in a cyclinder. After few days when he tried to use the TFE-gas nothing came out of the cylinder. He decided to cut the cylinder with the help of his assistant. To his surprise the TFE-gas has polymerised into a waxy white powder. Which was eventually called PTFE and patented by DuPont.Today, PTFE is sold by different manufacturers in several brand names.


Dale kleist a researcher was trying to weld to two glass blocks to form an airtight seal. Accidentally molten glass was hit by compressed air which resulted in an easy way of creating fibreglass.


PTFE when coated on fibreglass fabric makes it a high tensile membrane. PTFE makes the fabric thermally stable,resistant to chemicals, insoluble in almost all solvents, UV resistant, flexible and does not break when subject to stress, high resilience characteristics, lowest friction coefficients, dielectric constant, non flammable, waterproof and excellent insulator. Whereas Fibreglass maintains the structural function of the fabric. Fibreglass has high modulus to elasticity and high tensile strength.


We take utmost care in choosing the fabric for the flange guards so that their are no pin holes which eventually may lead to accidents. Coating thickness is checked so that guards can perform in extreme conditions for extended periods. We use Kevlar threads which are strongest and decomposes at 800 degrees celsius. Kevlar threads has very little stretch and are 2-3 times stronger then nylon or polyester. Kevlar threads are only available in Yellow colour and are very expensive.


All our flange guards are made of multiple layers of PTFE Coated fibreglass fabric with an inner scrim.


The inner scrim helps the guard in holding on to the flanges. Braided PTFE coated ropes are used on the guard which are fire retardant and do not decompose in extreme conditions. Cotton or nylon ropes will not last these extreme conditions and eventually compromise the safety of the guard. Velcro is provided on the extreme ends giving it the second fastening system.


Feel free to ask us for quote or a Pricelist of PTFE Flange Guard: [email protected]


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