Miguel,
Metal is not a good gasket material except for cylinder heads sometimes.
If this is the carb to manifold gasket and it is a slip on cylindrical fitting, try to find an o-ring of the correct diameter to match the outer diameter of the inner part and the inner diameter of the outer part, this should squish as you install the carb.
If you are repacing a flat gasket beween two flat surfaces, buy intake manifold gasket material at an auto parts store. If you are carefull making it, this will be as good as the original.
Ron