I have used the Tommy tape on 2 projects now. The first was to seal a leak in our pool heater line. This line is under pressure and it heal great. The 2nd project was the carburetor intake boots on my '79 Yamaha motorcycle. these boots are made of rubber, and were age cracked. This affects the bike running. After putting the tape on the boots, I started the bike, and the Tommy tape worked as I hoped it would. The cracks allowing excess air into the intake were sealed and it runs great again. I will be buying more Tommy tape, there are a lot of projects it will work on.