ELK Butyl Seal Tape that provides a mess-free and airtight sealing for RV, Mobile, Window, Boat Sealing, Glass and EDPM Rubber Roof Patching. Does not melt unnecessarily. It can be Installs easily on tight corners and unusual patterns. Ideal for crawl space wall liners, repairing roofing or windows and any other typical RV, home, automobile and boat surfaces. Resistant temperature range -40 to 250 °F. Surface must be clean and dry before installation. Do not stretch the sealant, Do not overlap the sealant. Do not allow dirt or debris to fall on the sealant. Make sure to apply pressure to the tape when squeeze the joint or it will not bond completely.