Polyken 1. It is consist of Polyethylene backing and Butyl rubber adhesive. 2. The color can be black, white, yellow and grey Polyken tape manufacturePart 1 System descriptionPolyken inner wrap tapep: polyken tape 980-20 /polyken tape 980-25Polyken outer wrap tape: polyken tape 955-20 /polyken tape 955-25polyken tape is also be called Polyethylene anticorrosion adhesive tape, butyl rubber ...