Added to latex, No. 8691 Mighty Mask provides short-term, high-temperature protection up to 510°F, safeguarding components during conformal coating processes and component-free areas on PCBs during soldering. Heat-resistant compound will be tack-free in 20 minutes and completely cured in 1 hour. Applied with spatula or supplied squeeze bottle, plastic-safe, peelable solder mask removes by hand or with tweezers without contaminating or corrosive residues.