国产又粗又猛又爽又黄的黄牛视频-欧美日韩精品网址-国产成人麻豆h视频在线观看-蜜臀av区一二三爽免费播放-久久久伦理精品-99精品资源在线视频-伊人久久大香樵-久久人妻人人爽-性欧美少妇煌妇喷水,麻豆免费在线观看视频网站,天天射天天干天天要,91精品国自产拍老熟女露脸

PTFE Envelope Gasket

【 特 征 Features】

    聚四氟乙烯夾層墊片是一種良好的靜密封材料，它是由石棉板、橡膠等具有彈性的材料與聚四氟乙烯包復(fù)薄片組成的具有彈性的密封彈片。聚四氟乙烯具有突出的耐化學(xué)腐蝕性能及使用溫度范圍（-180°C - +250°C）廣的特點(diǎn)。除高溫溶融堿金屬與元素氟外它不受任何化學(xué)藥品侵蝕。它的摩擦系數(shù)很低，具有優(yōu)良的耐氣候性能，是最好的不粘材料。

    PTFE envelope gasket is a kind of static seals. It is composed of eastic materials such as compressed asbestos sheet, rubber, ceramics, etc. and PTFE envelope cover.

    PTFE has superior properties against chemical (not affected by all chemicals except molten alkali metal and fluorine at elevaerd temperature) and temperature （-180°C - +250°C）。 The coefficient of static and dynamic friction of PTFE are very low. PTFE is the best of the "non-stick" material. It has excellent anti weathering and aging characteristics.

    聚四氟乙烯夾層墊片用作管道法蘭及橡膠、塑料、搪瓷、石墨襯里的產(chǎn)業(yè)機(jī)械設(shè)備接合中處的密封材料。

    PTFE envelope gasket is used to seal pipe flange and joint of industrial machinery apparatus which is lined with rubber, plastic ceramics, graphite etc.