S-PACO-K602-2 fits these pumps Manufacturer Part Number Model Number Series Paco 37-15951-2B, 37-15955-2B Paco 38-15951-2B, 38-15955-2B Paco 39-15951-2B, 39-15955-2B *with exception of U.S. Seal, all manufacturer's names, part numbers, and descriptions are used for reference purposes only. It is not implied that any part is the product of these manufacturers.