Structurally speaking, acetone is quite similar to MEK; both have one carbonyl carbon flanked by alkyl groups. Their respective dielectric constants and dipole moments are also very close. I'd be surprised if one would work and not the other. After all, you are just using it as a "cleaning" agent to prep the adherent surfaces. If Kern's Fusion starts disintegrating in the vicinity of his seals, then we'll know that acetone is bad for the drycore bilam.
MEK is quite cheap. I bought a 32 oz. can at Home Depot the other day for about $6.
FYI, any hardware store should carry it. Remember to take proper safety precautions when working with it.
I couldn't find a hardware over here that carried MEK. That's why I opted for the acetone. I think the alcohol swipes would probably work just as well.
Unfortunately I no longer have the core that I did the seals on. And as I had DRIS change out the seals for glue less seal replacement, and then removed the cuff & neck rings, there wouldn't even be any point in asking Whites to preserve the suit for scientific research.
