Colormetrics White Putty Tape / Butyl Tape 3/16" x 1" x 20' (Single Roll)
3/16" x 1" x 20' White putty / butyl tape.Commonly used behind the flange on windows and doors.  Excellent sealing properties.  Adheres to many products including metal and glass.  Non-hardening material allows it to conform and stick to the items being sealed.