Description
That little window on your pump—the sight glass—is so useful. It lets you check the oil level with just a glance. But for it to work right, it needs to be sealed perfectly to the pump.
That’s the job of the Oil Sight Glass Gasket.
It’s a small, donut-shaped ring made from a special material. This gasket sits between the round sight glass and the metal body of your Busch vacuum pump.
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