韩国精品一区二区三区无码视频,久久久久久久波多野结衣高潮,人人妻人人澡人人爽欧美一区九九,国产三级在线观看播放

Language version:中文版 | English | ??? ??
Home/
Products

Products Name:Model ST70 mechanical seal

Products Details:

Operating parameters:
Stress:0~1.6Mpa;Temperature:-20℃~180℃;Rotational speed:≤20m/s;Medium: oil, water, alkali, organic solvent, etc., dynamic, stationary ring materials: graphite, silicon carbide, tungsten carbide and so on.