This is the official Busch O-Ring made of Viton material, sized 24 mm x 3 mm (Part #PL23970115). It is a direct replacement sealing ring used in multiple vacuum pump brands. This O-ring fits Busch Panda WV250B, WV250C, WV500B, WV500C models, as well as Leybold Ruvac WA/WAU series pumps. It creates a tight seal between mating surfaces to prevent leaks.
Keep your Leybold Ruvac WA501 or WAU501 Roots blower running smoothly with this Seal & Gasket Kit. It includes all the O-rings, shaft seals, gaskets, and other small components you need for routine light maintenance. This kit helps stop small leaks before they become big problems .
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