Pentair 37400-0027S Buna Shaft Seal Replacement Sta-Rite Pool and Spa Pump Buna shaft seal replacement Fits Pentair Sta-Rite Max-E-Glas II, Dura-Glas II, Dyna-Glas, Dyna-Max and Dyna-Pro series pool and spa pumps Also fits Pentair Sta-Rite ABG, JWP, Dyna-Wave and Dura-Jet series pool and spa pumps Measures 2-1/4-inch length by 1-3/4-inch height by 1-3/4-inch width