Wet End Repair Kit, Check Ball Material Santoprene, Compatible with Grainger Part Number 20LR38, Compatible with Manufacturer Model Number E2PA6D669C, Diaphragm Material Santoprene, Number of Check Balls 4, Number of Diaphragms 2, Number of O-Rings 8, Number of Seals 0, Valve Type Ball, Product Type Fluid End Repair Kit, Media Intake Pressure (Maximum) 100 psi, Compatible with Pump Type Air Operated Double Diaphragm Pump, Compatible with Brand Versa-Matic