Good metal to glass adhesion waterproof sealant; This product is to be used on side windows, tempered bolt in parts / Sunroofs / Bolt in Truck Sliders Side fixed window applications only Can be used to seal headlights, tail lights, door liners, and many more applications; Remains sticky to seal Do not apply to wet surface; Surface must be clean and free from dirt old adhesive or chemicals; Do not use any chemicals other than alcohol or glass cleaner to clean surfaces Automotive Side Window Solid Core Adhesive Tape Butyl 15' - 5/16" Round Roll Solid Butyl Tape Soft Seal Good metal to glass adhesion for creating a waterproof barrier Dum-Dum Tape for securing a multitube of applications when pressure set This product is to be used on bolt in Side Windows, Sliders, Sunroofs frames This product is not to be used for windshield replacements or on any application where urethane adhesive is required. Even if Butyl Tape was originally used on the windshield in the past it is no longer an acceptable product for that application and urethane must be used. Knowledge of the use of this product is helpful. Got a question? We can help. We have in the Auto Glass Business since 1975 Other sizes available both in thickness and length see our store Do not apply to wet surface. Surface must be clean and free from dirt old adhesives or chemicals. Do not use any chemicals other than alcohol or glass cleaner to clean surfaces. Let thoroughly dry before applying tape kit.