The Leybold D16B Vacuum Pump – Major Maintenance Kit is a comprehensive OEM-specification maintenance kit for the Leybold D16B rotary vane vacuum pump, containing all seals, vanes, O-rings, and gaskets required for a major overhaul. The Leybold D16B is widely used as the primary vacuum pump on VTA and UIC wiped-film distillation systems, and periodic major maintenance restores factory vacuum performance. Includes all parts required for a complete rebuild without the need to source individual components.