Hi Have AO Smith hot water heater with recirc B & G pump just above the heater. The gaskets thrice have dried out and ruptured. Basement filled with water I have been changing the gaskets regularly and the last change was 6/2016 and latest flood was 5 days ago... Home water pressure is about 80 psi entering the home from the street I am looking for a commercial grade sealed bearing recirc pump that can be attached to the copper waterlines (there is a shutoff valve on each side of the pump)..This new pump should be able to be fitted with a soldered joint at each end or some kind compression fitting (?); so that I never again have to deal with the gasket problem... There have been three floods in the basement in 18 years costing thousands in repairs and salvage Thanks for the professional and best advice.