Never! Never! Never! use a tape product that is not designed specifically for your EPDM rubber roof on your RV. There are many different products that are sold to repair your RV roof but you should use only those that are made out of the same EPDM material. Remember that all EPDM roofing  technology and repair procedures were developed by the commercial roofing manufactures. As we have stated previously, they are only two manufactures of this product in the U.S.: Carlisle Syntec Systems and Firestone Building Products. Their roofing systems have warranties up to thirty years on a roof. This is an extreme amount of time to be exposed to possible failures, so they do years of research and testing to make sure their products will perform. Never use any caulking that is not EPDM or butyl based.