lower inner rotating seal sleeve 106 a connected to the inner bearing inner sleeve 104 a and recessed within the drivehead 10 a plurality of seals including a single lip pressure activated seal 106 b double lip pressure activated seals 106 c sand exclusion seal 106 d and labyrinth seal 106 e are located radially to the rotating lower inner seal sleeve 106 a and abutting the drivehead 10 the seals are designed to prevent leakage from the annular space 13 to the bearing assembly 104 from between the rotating lower inner seal sleeve 106 a and drivehead 10 the gimbal assembly 102 includes a base 102 a having a semi spherical inner surface 102 b a spherical gimbal member 102 c seated against the inner surface 102 b a retaining ring 102 d for connection to the base 102 a and having a semi spherical inner surface 102 b u2032 and appropriate sealing rings 102 e seated within the base 102 a and retaining ring 102 d allows a pivoting motion of the gimbal member 102 c with respect to the base 102 a and retaining ring 102 d sealing rings 102 e prevent fluid from passing between the gimbal member 102 c and the exterior of the gimbal assembly 102 the top seal assembly 100 includes a pack off seal 100 a for gripping the polished rod 26 and for sealing the polished rod.