Description Heavy Duty 3 mil solvent recycling bags sized for the Kresco / ISTpure SR180 solvent recycler. The thicker 3 mil film stands up to heavy paint solids, dried coatings, and the stress of high-temperature and vacuum distillation, where thinner bags can soften, pull, or tear before the cycle ends. Line the boiler, run your cycle, and lift the residue out clean — less mess, fewer failures, and a cleaner still chamber. 100 bags per pack. Also fits other batch recyclers of the same tank size — confirm your model.