API mud pump piston rubber 1.service life could reach more than 360 hours 2.in stock 3.against water,heat,oil and ... . The hub is formed from high grade steel. The piston rubber is made from specially formulated compounds which are resistant to ... -P-160,8-P-80,7-P-50,K-700,K-700A,K-500,K-500A,K-380,A1700-PT,A1400-PT,A1100-PT,220P ... -LP,WILSON600,PPWH.OMEGA:OPI 1000 API mud pump piston rubber