Type | Hub Material | Cup Material | Hub surface treatment | Size |
Bonded pistons, Replaceable pistons | Forged by 45# steel , 40Cr with hardening and tempering | Urethane NBR rubber | Phosphating & by Oxidizing | 3-8'' |
Description | Temperature Range | Pump Pressure | Abrasion | Drilling Fluid |
NBR | -40~100 °C | 5000PSI(35Mpa) | Not Bad | Water base |
-40~210 °F | ||||
polyurethane | -40~85 °C | 5000PSI(35Mpa) | Excellent | Water base & Oil base |
-40~185 °F | ||||
HNBR | -50~150 °C | 7500PSI(52Mpa) | Good | Water base & Oil base |
-58~300 °F |