Pentair 350013 Lid O-Ring Replacement Pool and Spa Pump Lid o-ring replacement Fits Pentair IntelliFlo VF, VS 3050, VS-SVRS and WhisperFlo, Challenger, Pinnacle inground pool/spa pumps Also fits Pentair EQ-Series commercial and WaterFall pool/spa pumps Measures 6-1/4-inch length by 1/4-inch height by 6-1/4-inch width