Because of the dye, we can't just wash them or get them too wet. And I'm kind of lazy and forgetful. (Meaning, I've been ...

Dry pumps are more tolerant of particulates and vapors than other types. Most blower, screw, scroll, diaphragm, claw, and piston pumps are dry vacuum pumps. Oil-sealed pumps (also known as "wet" pumps ...