Introduction：In general, the accuracy of PTFE product is not easy to control because its coefficient of linear expansion is higher than that of metals, and its one of volume transition temperature is around room temperature causes volume changes approximately 1 to 2%. Moreover, thin-walled PTFE products are known to be difficult to machining because not only PTFE is flexible and elastic material, but also residual stress remains after molding sometimes deform due to frictional heat generated during the machining process or due to aging after machining. Such deformation could influence dimensional accuracy.
Steel-lined PTFE equipment usually has a discharge port, a mirror, etc. in the production, but how to successfully apply this type of nozzle to the complicated head intersection line, of course, our answer is welding So how do you weld it? How to control the temperature of PTFE welding? Let us tell you one by one.
The base material was made via fiberglass impregnation in PTFE and refined, coating with silicone adhesive and with excellent heat resistant and mechanical strength.
Good release and smooth
Good performance of high temperature keeping, stable size.
Small friction coefficient, good insulation.
Good corrosion resistance.
Where High-Speed Seals Are Found
High speed rotary shaft seals are found in many applications. Examples would include cryogenic deflashing equipment, vacuum pumps, torpedo shaft seals, gas turbine engine starters, and submersible dredge pumps. AC/DC motors often require high speed shaft seals, and can be found in items like CNC tool spindles and dental or surgical instruments.