Gomec and Mexiko Wonder Cushion compound rubber rolls, also called self-fusing rolls, are rubber-based, extremely versatile, non-tacky material, making them very easy to use and apply. Product material characteristics and properties also relate to the type of rubber used in the making of the tape. Self-fusing or self-amalgamating tape delivers one of the most versatile insulating, waterproofing, splicing, protecting, repairing and bonding solutions available in the market.