The 7650 model, the aluminum housing and endplate are solid but the internal sealing parts are split so that the seal can be repaired without having to unbolt the seal housing. This is the perfect scenario if you have a pillow block bearing arrangement and don’t want to remove the bearing, gear box, or drive motor to rebuild the seal. The split “rotor cups” are made out of a mineral filled PTFE, and they are now the sacrificial part of the seal. The 7650 repair kit consists of a new split elastomer and two split PTFE rotor cups.