Jaccuzi Magnum, Magnum Plus, Magnum Force Pool Pump LID O-RING 47-0358-03 Jaccuzi Magnum, Magnum Plus, Magnum Force Pool Pump LID O-RING 47-0358-03 Fits: Jacuzzi Magnum, Magnum Plus, Magnum Force, Magnum Force 3 OUTSIDE DIAMETER: 6" INSIDE DIAMETER: 5-5/8" THICKNESS: 3/16" This O-ring is for Pump Models after 1998 Quality Replacement Parts sold By TORK Distributors.