EasyMold? Silicone Paste is ideal for a wide range of impression type mold applications where a non-sag, fast build up, fast curing application is required. Up to 15 Minutes working time, 3 hour cure at 70?F/21?C. Produces excellent detail from original. Self-releasing, no mold release agent required High heat range, up to 400?F/204?C. Strong flexible, reusable molds. No vacuum equipment required. No shrinkage.