Most all of the "fit in place" gasket in a tube things will do the job. Some are better than others but they don't really start to shine until they get into situations with heat, vibration, and other things that cause leakage. Any of the gasket compunds will work well on a rear end. I would suggest you buy something that is designed for use with no gasket rather than a "gasket sealer", they are usually better products.
-Scott