MTU94385 and MRS84385 AND MTU94383, The shaft diameter is 16mm, it is called as RM FB-16M, It is for auto cooling pumps.WenZhou RiMi Seal Manufacture Co.,Ltd. is one of professional mechanical seals manufacturers in CHINA. Our factory specializes in all kind of mechanical seals, industrial rubber products and sealing materials. At preaent. We have developed 20 series and 500 sizes of mechanical seals. Which used in family water pumps, industrial pumps, auto cooling-pumps and compressors. The products sell abroad and at home