The one that goes on the pipe to seal the header and pipe or the one to the crankcase? Man I have NEVER blown one unless. I only have replaced them if they get too loose.What are you doing? Are you buying the correct size? You need to get 1/8th scale gaskets the 1/10 ones are way too small.
Or your spring may not be strong enough anymore. If it's loose, it will allow the header to vibrate and eat up the gasket. That's if it's the one right on the engine exaust port.