Diaphragm Pump Repair Kit, Check Ball Material Buna-N, Compatible with Manufacturer Model Number 666150-122-C, 666150-222-C, 666150-322-C, 666150-422-C, 666150-822-C, 666151-222-C, 666151-322-C, 666152-222-C, 666152-322-C, 666152-522-C, 666152-822-C, 66615A-322-C, 666162-322-C, 666170-122-C, 666170-322-C, 666172-222-C, 666172-322-C, 66617B-222-C, 666200-222-C, 66620A-322-C, Diaphragm Material Buna-N, Number of Check Balls 4, Number of Diaphragms 2, Number of O-Rings 9, Number of Seals 9