... shaft sizes:12mm, 16mm,20mm, 5/8'' or3/4'' 2, for high temperature rubber 3, ISO9001 WenZhou RiMi Seal Manufacture Co ... million sets per year, Production of our seal from each parts to the finished products, mould designing,lathing,stamping,molding,grinding ... low pressure, small diameter rotary shaft applications. Auto unitized seal for engine coolant pumps type 6A