Description
This specific gasket is special because it fits many pumps. It works with various models from Busch, Mink, Seco, and specific R5 pumps (like those using mm1402AV or mm1502AV parts). This makes it a versatile part to have in your toolkit.
It’s made from a high-quality synthetic rubber. This material is chosen because it stays flexible even when surrounded by hot vacuum pump oil. It won’t break down or crack easily.
Replacing it is a quick task during routine maintenance. If you see oil residue around the sight glass or are doing an oil change, simply swap the old, flattened gasket for this new, pliable one.
A good seal here prevents messy drips. More importantly, it ensures no air sneaks into your pump through that spot, which could hurt its performance.

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