If you come in to Allied Packing and Rubber, Inc. with a tricky sealing situation, we may just tell you to put a cork in it. But we don't mean that in a bad way! Cork is actually an excellent option for sealing uneven surfaces because it is able to fill in imperfections and distortions. A good seal must offer good thermal, chemical, and mechanical resistance. This seal is achieved with the unique properties of cork that are used for the high-performance automobile industry and many other industries.