Fast Curing Description Fast Curing (Flx 133) is a black heavy body silicone adhesive. This adhesive is available in a 3 ounce tube or 10.3 ounce cartridge. Get Adhesive Download Specifications SDS TDS Product Information Specific Gravity 1.33 Tack Free Time (20gm mass @ 25°C) 20-50 Color Black Temperature Range -40 to +600F (Intermittent +650F)