※ Product name: PTFE gasket
※ Product specification：DN10-1000
1, PTFE gasket full name PTFE gasket, also called PTFE gasket or Teflon (Teflon) gasket, by PTFE rod, tube, plate by mechanical turning or cutting into flat gasket, V-shaped gasket, piston ring, ball valve washer. It has good properties such as corrosion resistance, aging resistance and non-conductivity. Teflon pH 0-14(except for molten alkali metals and fluorine under high temperature and pressure). It can have good mechanical strength between -100℃ and 100℃
2, PTFE gasket material: soft material because of its easy to produce elastic or plastic deformation under the action of preloading force, so as to block the fluid leakage channel, so it is conducive to sealing; But soft materials generally can't withstand high pressure fluids. The corrosion resistance, heat resistance and density of different gasket materials are different, and the applicable sealing medium and working condition are different.
3, the temperature of the use place: the temperature of the medium directly affects the sealing performance of the gasket, so the material must be equal to or higher than the field temperature; Moreover, the change of temperature will also directly affect the sealing performance of the pad, resulting in the occurrence of leakage.
4, sealing medium: In order to play a better sealing role, must be in accordance with the actual sealing medium temperature, pressure, PH value, acid and alkaline chemical properties to choose the sealing gasket material.
5, sealing surface condition: sealing surface shape and roughness have a certain effect on the sealing, smooth surface is conducive to sealing. The roughness of the surface of the soft gasket has little effect on the sealing performance because of its easy deformation. For hard gaskets, the condition of the surface has a great effect on the seal. The larger the contact width between sealing surface and gasket, the more beneficial to sealing. But under the same compression force, the larger the contact width, the sealing pressure will decrease. So in the selection of sealing materials to choose according to the actual situation.