日日做A爰片久久毛片A片英语,久久国产露脸老熟女,久久久精品中文字幕麻豆发布,vagaa亚洲亚洲色爽免影院

It is a very novel and unique sealing material made by a unique processing technology. It is a continuous ribbon white pure PTFE product, which has good flexibility, compression resilience, creep resistance, high and low temperature resistance, excellent corrosion resistance, aging resistance and self lubrication. With excellent sealing performance and extremely convenient installation and use, it is an ideal sealing material for chemical, pharmaceutical, petrochemical, food and beverage, electronics, power, metallurgy, shipbuilding and other industries

Applicable to all chemical substances except element fluorine and molten alkali metal.


Technical parameters:
Operating temperature: - 250 ℃~+260 ℃
Service pressure:<20 MPa
Density: 0.6 ～ 0.8 g/cm3
Available specifications: 3-100mm wide