This is the official Busch Retainer Ring (Part #432107575). It is a direct replacement part made for Busch R5 series vacuum pumps. This retainer ring fits six popular models: 0025C, 0025E, 0040B, 0040C, 0040E, and 0040F. It helps keep bearings, seals, and other parts securely in place .
10 in stock
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