US Seal Shaft Seal [PS-185 Buna] (PS-185) airbuttonparts The 3-5/8 inch hole size

The 3-5/8 inch hole size and 2-1/2 inch spigot layout help define the intended structural and plumbing relationship of the fitting

Time clocks with freeze protection help automate operation schedules while adding temperature-responsive protection in vulnerable conditions

This cartridge is a strong choice for restoring normal filter operation during seasonal maintenance

Designed for 115 volt input with 12 or 13 volt output options

The Raypak cast iron inlet and outlet header is designed for compatible 185

US Seal Shaft Seal [PS-185 Buna] (PS-185) airbuttonparts The 3-5/8 inch hole sizeThe US Seal Shaft Seal [PS 185 Buna] is a replacement pump shaft seal from US Seal Manufacturing designed to help prevent water from leaking along the pump shaft in compatible pool and spa pump assemblies. Shaft seals are critical service parts because they protect the motor side of the pump from water intrusion while allowing the impeller and shaft to rotate properly. This seal is intended for pump repair situations where the existing seal is worn,