Pentair U9-375 O-Ring for Trap Cover Replacement for select Sta-Rite Pool and Spa Pumps O-ring for trap cover replacement Fits Sta-Rite Max-E-Glas II/Dura- pool and spa pumps for "Full Rate" and "Up-Rate" models Fits with Sta-Rite pool and spa pumps Dyna-Glas/Dyna-Max series Also fits with Sta-Rite Pool and Spa Pumps Dyna-Wave Series