久久久亚洲精品天堂_午夜視頻久久久久一區_特级A级毛片无码专区免费看_国产精品密蕾丝视频下载_免费国产成人高清视频网站_美女被爆羞羞网站在免费观看_日韩欧美亚洲中文字幕一区二区_成人午夜小视频_国产五十路六十路三级片色欲_永久免费观看的毛片的网站下载

Tetrafluoroethylene tetrafluoroethylene and propylene copolymer produced by emulsion polymerization, has excellent high temperature aging resistance, acid and alkali resistance, weather aging resistance, excellent high temperature water vapor resistance, unique compression resistance permanent deformation performance. In addition to the fuel resistance is not as good as type 26 fluorine rubber, it has quite good resistance to lubricating oil, hydraulic oil, engine oil and brake fluid. The greater disadvantage of PTFE is that the cold resistance is very poor.
Temperature range: 0 ° C to 230 ° C

Advantages:
· Excellent aging resistance at high temperature
· Excellent acid and alkaline resistance
· Excellent resistance to high temperature water vapor
· Unique compression and permanent deformation performance
Disadvantages:
· Poor cold resistance
Applicable media:
· Base
· Phosphate ester
· Amine
· Engine oil
· Hot water and steam
· Pulp fluid
Not suitable for media:
· Aromatic fuel oil
· ketone
· Chlorinated hydrocarbons