Boron Nitride Hi-Temp 1800 Mold Release and Lubricant is a high temperature mold release primer for slumping and fusing molds. It's also great for stainless steel molds because there's no need to pre-heat the mold before applying. Dries instantly and is good for multiple firings below 1350 degrees F. Above 1350 degrees F, re-apply mold release. On ceramic molds, coat thoroughly about 4 times. Holds up well for multiple firings. The handy aerosol container affords easy and smooth application. Air or oven dry. Removes easily after use. 10 oz can