Kehua's pistons are made with tough and durable rubber for all pressure, available in single-acting and double-acting in variety sizes for most pumps. Especially in Long-life bonded piston with rubber and fabric Long-life bonded piston with NBR. All the above pistons and piston rubbers, which are ideally suitable for either oil-base of water-base muds, can be ensured universal interchanged ability, max service life and min liner wear. When you have running at min cost. Khua also offers the relevant piston rubbers made of rubber with fabric, NBR, and Urethane.