The AW Perkins 600 Degree RTV Hi-Heat Red Silicone Sealant allows you to seal your stove pipes, gaskets, or other areas of your stove or furnace in a snap, The material can withstand the indicated slightly lower temperature continuously without damage, and the indicated slightly higher temperature for up to an hour, AW Perkins 600 Degree RTV Hi-Heat Red Silicone Sealant blends in with your existing stove or fireplace appliances and provides an easy solution to some of the more common high-heat appliance problems, 600 Degree RTV Hi-Heat Red Silicone Sealant, Withstands 600°F intermittently, and 550°F continuously, Neutral cure, low odor, and non-corrosive so it wont harm metals, Case of 12 - 10, 3 fl, oz cartridge, SKU: TWST5115