All solvents are hazardous .

People set themselves on fire with alcohol far too often .

That ethyl acetate evaporates super fast so if you have a can you're disposing of just leaving the cap off will clear it of vapor .

I don't know why you would need to burn large amounts of it  . Sounds crazy .

Acetone and the ethyl acetate will degrade the nitrile rubber O-rings much faster than isopropyl alcohol .

Methyl and ethyl alcohol which make up denatured alcohol won't affect nitrile or butyl rubber .

The O-rings won't dissolve but will lose their elasticity .

You should remove the O-ring if you are cleaning with solvents that will damage the O-ring .

That includes sodium hydroxide for nitrile .

Butyl rubber O-rings are superior but who knows half the time what you're getting . The majority of them will most likely be nitrile rubber .

Handy Tables for chemical compatibility for solvents vs different polymers : https://www.applerubber.com/chemical-compatibility-guide/

The PTFE ( Teflon ) bushing used for the needle isn't affected by any of those solvents .

Mineral spirits is only a solvent for waxes  . It won't dissolve cured acrylic or alkyd , or linseed resins .

It's only good for removing uncured alkyd ( enamel )

As far as alcohol used for acrylic thinner  - it depends on the type of acrylic polymer used in the paint .

Acrylics listed as " lacquer acrylic " are fine but there are other formulations  , AK's Next Gen for one , that will congeal upon exposure to alcohols .

If in doubt , it's easy to check by adding a few drops of the alcohol into some paint .