The fastening nut is a supplementary part to the flange collar of the Sena pump. It draws the collar to the pump port, thereby ensuring a firm and watertight connection of the piping to the pump.
When replacing the pipe connection or repairing a leak, replacing the nut together with the collar is the recommended procedure for a durable result. The nut is made of plastic resistant to the aggressive pool environment.
The original part is designed precisely for the thread of the Sena pump and guarantees reliable tightening without the risk of damaging the thread or deforming the port.
