Self-aligning, three-piece bearing. Complete consists of inner Trubore bearing, Nylon bushing with O-Ring, and threaded adapter. Unique design eliminates costly replacement since inner bearing will spin if shaft binds or will self-align at O-Ring seal in the event the motor is slightly cocked. Inner bearing and bushing can be used with any joint size. Use with our precision ground stirring shafts (8068,8070, 8071,8073,9532,9533). For replacement o-ring, order 7855-716.