Originally Posted by rabmc
Would this cause any problems if has no rubber seal mate
would a normal one fit a spec r tank ? or does it have to be the same one ??
they have different rated pressure release valve in the caps also so has to be the correct item for the Cossie
ps if there's NO seal then yes water would get past the cap as there is loads of pressure in the system so water and steam could and would escape especially when being booted