Smooth-On Universal Mold Release 1gal

Universal™ Mold Release Agent is formulated especially for mold making and casting, and works well with most liquid rubber and liquid plastic products. It will release mold rubbers (such as polyurethanes and polysulfides) from properly prepared models. Sealing porous models (wood, plaster, concrete) or certain modeling clays (containing water or sulfur) with Smooth-On SuperSeal™ or other sealer may be necessary. Universal™ Mold Release is effective over a broad temperature range from 70°F to 500°F.

The Universal Mold Release is silicone based and is best used with casting Urethane based rubber or plastic. It is not good for casting silicone because the silicone will bond to it.