The modified PTFE gasket is also called Filled PTFE gasket. It is a certain amount of filler added with PTFE resin, such as glass fiber, bronze powder, molybdenum disulfide, graphite, carbon fiber (CF), glass beads. And glass fiber (GF), quartz, barium sulfate, etc., after high-speed mixing, press molding with a mold, and then high-temperature sintering to make a gasket or other products or first pressed into a modified PTFE plate and then stamped or cut. Filled PTFE gaskets greatly improve the properties of PTFE by adding a certain amount of filler to the PTFE products, especially wear resistance, heat conduction, tamper resistance, self-lubrication, etc. It has a significant improvement over pure PTFE products. It is suitable for lubricating parts of corrosion resistance, heat conduction, wear resistance, oil-free lubrication, shock absorption and anti-wear in the temperature range of -180 °C ~ +250 °C.
Graphite filled PTFE Gasket
Graphite-filled PTFE gasket for excellent compressibility, recovery and sealing. Its unique properties and advanced properties show tightness and torque retention. In the cold flow and creep properties of the material, the shortcomings of the conventional PTFE are overcome, and it can better maintain the bolt load than the conventional PTFE, which improves the durability of the seal and reduces the maintenance of the flange. The advantages of Graphite Filled PTFE Gasket: low friction coefficient, good compressive strength, and improved wear resistance; making it use much more than traditional PTFE, which improves the environment and saves costs. Suitable for chemical, petrochemical, hydrocarbon reactions and power plants.
Glass Fiber Filled PTFE Gasket
Glass fiber filled PTFE Gasket Advantages: Improve wear resistance and chemical resistance; make it use much more than traditional PTFE, which not only improves the environment but also saves costs. Suitable for chemical, petrochemical, hydrocarbon reactions and power plants. It is especially suitable for sealing applications in food, pulp, paper, pharmaceutical, etc. environments where no pollution is allowed.
Expanded PTFE Gasket
Expanded PTFE Gaskets are truly advanced and unique materials. It has excellent performances such as creep resistance, cold flow resistance, ultra low temperature resistance, no pollution, easy installation and replacement. With a small preload, it can withstand considerable internal pressure even under pressure fluctuations. It is ideal for rough and wear-resistant and fragile glass flanges.
Features
The properties of the Modified (Filled) PTFE are closely related to the properties, content and preparation process of the filler. The filler must satisfy: (1) the filler is stable under sintering conditions of 380-400 ° C; (2) the filler particle size is £150 μm; (3) the filler does not absorb moisture; (4) the filler itself under sintering conditions Will not cluster; (5) the filler does not react with PTFE.
1. Improve cold flow resistance and creep resistance: Filling Graphite, Glass Beads and Glass Fiber (GF, Polyphenylene Sulfide)
2. Improve lubricity: Fill MoS2,
3. Improve thermal conductivity: Filled with Bronze Powder, Molybdenum, Nickel, etc., Carbon Fiber
4. Improve wear resistance: Filled Glass Beads and Glass Fiber (GF), Polyimide, Polyphenyl Ester
5. Improve stability and reduce deformation: Carbon Fiber, Polyphenylene Sulfide.
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