Chemically stable and shows little change in physical properties after exposure to sunlight, rain, snow, ozone, temperature extremes and weathering. A one-part ready to use material that shows little change in gunnability at temperatures from -80F (-62C) to 140F (60C) permitting the sealant to be applied in any season. Can be used for extended periods at temperatures up to 450F (232C) and for shorter periods at temperatures as high as 500F (260C). Mildew-resistant. Long work life or tooling time of 5-10 minutes.