... 16mm,20mm, 5/8'' or3/4'' 2, for high temperature rubber 3, ISO9001 WenZhou RiMi Seal ... used in family water pumps, industrial pumps, auto cooling-pumps and compressors. The products sell abroad ... sturdy coil spring4, sintered steel, alumina ceramic,graphite carbon,NBR rubber bellows. or HNBR, Silicon carbide.5 ... small diameter rotary shaft applications. Auto unitized seal for engine coolant pumps type 6A