PTFE gaskets come in a variety of grades to meet a variety of sealing applications, with outstanding chemical resistance, strong dielectric strength, and a wide working temperature range. They’re also resistant to moisture absorption, corrosion, and hydrolysis, as well as having a very low coefficient of friction, making them a preferred choice for rotary and linear movement seals.
Virgin PTFE and expanded virgin PTFE are the most popular grades. Both meet current FDA guidelines and are widely used in the food, beverage, and pharmaceutical sectors. Because of its greater compressibility over ordinary virgin PTFE, expanded virgin PTFE is ideal for use on fragile, worn, or damaged flanges. Bronze, carbon, glass, 316l stainless steel, and metal detectable are just a few of the grades available with extra fillers. Please visit the links in the table below for further information about each grade.
PAR Group’s in-house CNC gear allows us to cut PTFE gaskets, seals, and washers to exact tolerances, allowing us to meet single or high production requirements. We can make dovetail, picture frames, and conventional flange gaskets, and we can work to bespoke dimensions drawings if necessary. Please see our step-by-step tutorial on ‘How to Measure a Gasket’ for instructions on how to measure flange and picture frame gaskets.
|Grades Available:||Service Temperature:||Thickness (mm):||Technical Data:|
|Virgin||-200°C up to +260°C.||0.5 up to 25||TDS / MSDS / FC|
|Blue Food Quality||-200°C up to +260°C.||5 up to 25.||TDS|
|Expanded PTFE||-240°C up to +270°C.||1 up to 6||TDS|
|1.5 up to 25||TDS|
|Glass Filled||-260°C up to +250°C.||1.5 up to 25.||TDS|
|Stainless Steel Filled||-200°C up to +260°C.||5 up to 25||TDS|
|Bronze Filled||-200°C up to +260°C.||5 up to 25.||TDS|
|Metal Detectable||-200°C up to +260°C.||4 up to 25.||TDS|