Description 1 in. Wide x 72 Yards Long, Blue Masking Tape Blue Masking Tapes are made of 1 mil thick polyester film and 2 mil thick silicone adhesive. They can be removed cleanly without leaving an adhesive residue. Blue Masking Tapes can withstand temperatures of up to 400 degrees F (204 degrees C). These tapes are packaged in a 3 in. core and are 72 yards long.
