... three common shaft sizes:12mm, 16mm,20mm, 5/8'' or3/4'' 2, for high temperature rubber 3, ISO9001 WenZhou RiMi Seal ... home. Our production ability is 4 million sets per year, Production of our seal from each parts to the finished products, mould ... , 16mm ,17mm, 20mm, 1/2'', 5/8'', 3/4''3, sturdy coil spring4, sintered steel, alumina ceramic,graphite carbon,NBR rubber bellows ...