VACU works great for keeping pressure down to prevent damage to electronics, but there should be a destroyable variant in the electronics section. It would only take in air (no vanishing particles) and could be destroyed by intense heat, acid, or EMP.
PUMP does not take in particles. It either creates air pressure, or it creates a vacuum depending on its temperature. It can be destroyed by ACID, AMTR, and SING.
I think what people are trying to say, is they are suggesting you use PUMP. PUMP with a temp of 0C will equalize pressure (absorbing it), and can be destroyed from a few things, although not that many, and not what you wanted. Maybe you can find something that makes negative pressure instead? Many reactions do that.
Wes12321 said that you can achieve it with pump, I explained that you wanted something indestructable. I support the idea, but many paople wll say it is easy to code, and it porbably not enough to add to main powder toy.
if u use pump, just use the square type pointer option to add a 3 pixels thick layer of diamond around the pump, this prevents anything from destroying it, unless u use a Convert- Warp bomb