... 12mm, 16mm,20mm, 5/8'' or3/4'' 2, for high temperature rubber 3, ISO9001 WenZhou RiMi Seal Manufacture Co.,Ltd ... abroad and at home. Our production ability is 4 million sets per year, Production of our seal ... 15mm, 16mm ,17mm, 20mm, 1/2'', 5/8'', 3/4''3, sturdy coil spring4, sintered steel, alumina ceramic,graphite carbon, ... rotary shaft applications. Auto unitized seal for engine coolant pumps type 6A