I have an application in which I need to encapsulate some small electronics in thin walled clear plastic tube. The electronics willbe packed into the plastic housing tube (~ 1 dia. x .025" wall) with some dry glass microspheres and then capped on both ends. A VERY low viscosity epoxy (around 400 cPs, mixed) will then be injected through a small hole in one of the endcaps and allowed to wick through the microspheres. My problem, having found a suitably thin epoxy and done some test runs with this technique is that the epoxy (or perhaps hardener) is causing the Lexan tube to craze. I have a very small sample of some unknown plastic tube that doesn't have this problem but cannot identify it. It looks and feels like Lexan as far as its rigidity and scratch-ability but I've noticed it is impervious to acetone (while Lexan, Acrylic definitely are not). I'm hoping that if I find a plastic that can handle the acetone it will probably be good with the epoxy too. Unfortunately the several other epoxies I've tried that don't attack the Lexan are too thick to wick through the microspheres. I'd like the tube to be clear as it allows me to visually monitor the wicking action. Any suggestions would be gratefully accepted. The hardener for the resin system I've chosen (System 3 Infusion resin) says CORROSIVE on the label and may be part of the issue.