上海少妇高潮狂叫喷水了,任我爽精品视频在线观看,精品一区精品二区制服,国产欧美高清在线观看,国色精品无码专区在线不卡,(无码视频)在线观看,亚洲中文有码字幕青青,日韩国产高清一区二区

PTFE6 (polytetrafluoroethylene balls)

PRODUCTS > PLASTIC BALLS > PTFE6 (polytetrafluoroethylene balls)

PTFE6 (polytetrafluoroethylene balls)



 


 

 

 


 

 

 

 


PTFE6 (polytetrafluoroethylene balls)
PTFE balls (PTFE6) are widely used in chemical pumps, oilfield pumps, nuclear power, aerospace, military, and other products.
 Characteristics: PTFE is a white opaque waxy powder with a density of 2.14~2.20g./cm3.
Features: It is heat-resistant—usable at temperatures ranging from 200 to 260 degrees Celsius, cold-resistant—remains flexible at -100 degrees Celsius; corrosion-resistant—resistant to aqua regia and all organic solvents; weather-resistant—has the best aging resistance among plastics; high lubricity — has the lowest friction coefficient (0.04) among plastics; non-stick — has the lowest surface tension among solid materials and does not adhere to any substance; non-toxic— has physiological inertness.
Precision Grade:G0—G4
Specifications:1mm—60mm
主站蜘蛛池模板: 亚洲美免无码中文字幕在线| 久久男人av资源站| 免费午夜无码片在线观看影院| 人妻少妇乱孑伦无码专区蜜柚| 色五月丁香五月综合五月4438| 大狠狠大臿蕉香蕉大视频| 国产性夜夜春夜夜爽| 国产国语熟妇视频在线观看| 国产极品美女到高潮| 亚洲国产精品无码久久98| 亚洲欧美另类成人综合图片| 欧美最猛性xxxxx大叫| 国产私拍福利精品视频| 精品亚洲成a人在线看片| 欧美精品色婷婷五月综合| 国产精品久久久久电影院| 成人无码区免费视频网站| 午夜福利yw在线观看2020| 国产人妻丰满熟妇嗷嗷叫| 国产偷国产偷亚洲清高孕妇| 国产人妻人伦精品1国产盗摄| 国产乱子伦精品无码码专区| 人人妻人人澡人人爽超污| 国产精品无码制服丝袜| 亚洲中文字幕日产乱码高清app | 亚洲爆乳少妇无码激情| 亚洲精品美女久久久久久久| 国产在线精品一区二区三区不卡| 狠狠色噜噜狠狠狠狠777米奇| 亚洲va中文字幕不卡无码| 狼友网精品视频在线观看| 麻豆精品偷拍人妻在线网址| 亚洲色大成网站www永久男同| 亚洲人成人77777网站| 久久久一本精品久久精品六六| 少妇被粗大的猛进69视频| 久久久久青草线蕉亚洲| 欧美69久成人做爰视频| 18禁免费观看网站| 久久久综合亚洲色一区二区三区| 无码人妻精品一区二区蜜桃色欲|