Wilden 04-1010-53 FKM Primary Diaphragm

The Wilden 04-1010-53 is a primary diaphragm constructed from FKM (Viton) elastomer, designed for use in 1.5 inch (38.1 mm) air-operated double diaphragm (AODD) pumps. This component serves as the primary fluid separation barrier within the pump's fluid chamber. Material composition is FKM (Fluoroelastomer), offering broad chemical compatibility and high temperature resistance suitable for aggressive fluids and solvents. The diaphragm is engineered to fit Wilden 1.5 inch clamped and bolted configuration pumps, including both metal and plastic body designs. Maximum operating temperature is dependent on the backup diaphragm or O-ring material selected for the specific pump assembly. This part is a direct interchange for Wilden OEM part numbers 04-1010-53 and 04.1010.53. Aftermarket manufacturer equivalents include DJ04-1010-53 (DJ Pump), PN04-1010-53 (Pumpkits), and N04-1010-53 (Nomad/JDA). The VT63 material designation corresponds to the FKM compound specification.