Buy a coupling for vacuum pump motor, at Milcotec - always good prices and fast delivery.
Types of Pump Couplings? Ask the Experts | Nationwide Delivery
Coupling element PPB512016 (PPB512000016) 175x132x93 mm (DxdxL) for Busch Vacuum vacuum pump R5 RA RC RE KB EVA PB. Your spare parts up to 50% cheaper !