Seal Kit Compatible with Pump Type In-Line Circulating Pumps Compatible with Series 1522 HD-3 LD-3 MF 60 Obs. 1 1/2 in Obs. 1 1/4 in Obs. 1 in Obs. 2 in Obs. HV PD-35 PD-37 100 Series 60 inAA in Compatible with Series Family 1522 HD-3 LD-3 MF 60 Obs. 1 1/2 in Obs. 1 1/4 in Obs. 1 in Obs. 2 in Obs. HV PD-35 PD-37 100 Series 60 inAA in Gasket Material Nitrile Rubber Includes Shaft Gasket Compatible with Brand Bell and Gossett