Black Double Sided Medium Density Foam 2 Way Glazing Tape. A general purpose Polyethylene foam tape with a patented cellular structure designed to withstand environmental breakdown and maintain an effective weather seal. The aggressive Acrylic adhesive on both sides of this tape provides high tack to aluminum, vinyl and glass surfaces. Used for sealing window glass, mounting showcase glass tops and installing bevel strips and vent covers. Color: Black - Thickness: 1/8" - Width: 1/2" - 108 ft Roll.