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What is the classification and application of expanded PTFE seal products?
Release time:
2019-05-04 12:30
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What is the classification and application of expanded PTFE seal products?
Expanded PTFE seal products (sealing elastic band) mainly have three of the most common, he has the interface sealing tape (to replace the gasket), valve stem packing and GFO fiber pump packing.
1. The interface sealing tape is made of expanded polytetrafluoroethylene (sealing elastic band) of the spirit of opaque solid ribbon, it has good elasticity, good toughness, good compressibility, good chemical stability and other characteristics, especially important is that it is easy to fit on the irregular surface and pressed into a wide sheet.
2. The valve stem packing is made of 100%EPTFE (sealed elastic band) and is made of EPTFE film. It also has the excellent performance of sealing tape, and the friction coefficient is small, the applicable temperature range is -268 ℃ to +280 ℃, it is easy to fill, fast, the valve stem has been worn can also achieve good sealing effect.
3.GFO fiber pump filler it is composed of expanded polytetrafluoroethylene, graphite and a high temperature lubricant wire, and then woven into a black-shaped filler.
It also has the properties of expanded PTFE (sealed elastic band), can be used in the entire pH range of 0-14, has stable chemical properties, small expansion coefficient, does not wear the shaft or sleeve, has good lubricity and thermal conductivity, has a temperature range of -240 to 288 ℃, and is easy to be cut off, not loose, not hardened, easy to fill and remove.
1. The interface sealing tape is made of expanded polytetrafluoroethylene (sealing elastic band) of the spirit of opaque solid ribbon, it has good elasticity, good toughness, good compressibility, good chemical stability and other characteristics, especially important is that it is easy to fit on the irregular surface and pressed into a wide sheet.
2. The valve stem packing is made of 100%EPTFE (sealed elastic band) and is made of EPTFE film. It also has the excellent performance of sealing tape, and the friction coefficient is small, the applicable temperature range is -268 ℃ to +280 ℃, it is easy to fill, fast, the valve stem has been worn can also achieve good sealing effect.
3.GFO fiber pump filler it is composed of expanded polytetrafluoroethylene, graphite and a high temperature lubricant wire, and then woven into a black-shaped filler.
It also has the properties of expanded PTFE (sealed elastic band), can be used in the entire pH range of 0-14, has stable chemical properties, small expansion coefficient, does not wear the shaft or sleeve, has good lubricity and thermal conductivity, has a temperature range of -240 to 288 ℃, and is easy to be cut off, not loose, not hardened, easy to fill and remove.
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