Diaphragm Pump Repair Kit, Check Ball Material PTFE, Compatible with Grainger Part Number 2CAP5, 2CAP6, Compatible with Manufacturer Model Number 666053-244, 666053-344, 666056-244, 666056-644, 666057-444, 66605H-244, 66605H-644, 66605J-244, 66605J-344, 66605K-244, 66605K-444, Diaphragm Material PTFE, Number of Check Balls 4, Number of Diaphragms 4, Number of O-Rings 9, Number of Seals 9, Valve Type Ball, Product Type Fluid End Repair Kit, Media Intake Pressure (Maximum) 120 psi