Outgassing, degassing, passing gas, what-ever ... anytime the ambient pressure surrounding a chemical (acetone, MEK, alcohol.etc.) is reduced by a vacuum, then that particular chemical will 'boil' off faster than you can spit. The fumes are as destructive to other materials as is the liquid - as long as the fumes can stay in contact. Most of these fumes dissipate rather quickly
IF one is using adequate ventilation ... strong hint there folks.
I have a large Gast vacuum pump seized from a meth lab drug raid about ten years ago. The danged thing just keeps on keeping on. I never want to open the thing though as I am sure somewhere inside it is a mixture of all the chemicals used in the drug making process as well as all the stuff I have put through it. Bet there is some kind of weirdness in there for somebody ... not me!
If you really worry about the damages to your 'system' there is a remedy.
Simply put a second bottle/jar/container/etc. in between the HF pot - assuming that you are using a Harbor Freight (HF) pressure/vacuum pot - and the vacuum pump. In other words - vacuum pump - line with cut off valve - safety pot - line with cut off valve - HF pressure/vacuum pot. There is also a big advantage if you can possibly use a saftey bottle that is larger in capacity than the HF pot.
First in line is the vacuum pump.
Then a cut off valve in the line on going to the safety pot.
Then the bigger safety pot.
Then another cut off valve from the other side of the safety pot.
Then the HF pot.
To use this contraption ...
First Be sure the first valve is open - turn OFF the one valve between the HF pot and the safety pot.
Pull a vacuum in the safety pot.
Cut off the first valve between the main pump and the safety pot and turn off the main pump.
Then open the valve between the safety pot and the HF pot.
Now the vacuum from the safety pot pulls the vacuum on the HF pot. NO problems of fumes/liquids entering the pump and ruining it.
To clean the
safety pot, just disconnect the line from both sides and blow it out with compressed air. BE SURE AND DO NOT INHALE if you do this by mouth, duh!
Confused, draw a diagram as you read the directions. Still confused, call CAV and ask him questions ... he is not too busy right now!