This metal shim ring is 0.10 mm thick—about the thickness of two sheets of paper. It is used to adjust internal gaps inside Busch Panda WV250B, WV250C, WV500B, and WV500C vacuum pumps . Getting the spacing right is very important for pump performance.
This small metal ring is 0.05 mm thick—thinner than a piece of paper. It is used to adjust the gap between parts inside Busch Panda vacuum pumps. Fits WV250B, WV250C, WV500B, and WV500C models.
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