With the ever-increasing technology in performance and racing engines, there became a demand for a stronger, more durable gasket. Also, bi-metal engines (aluminum/iron] have become more popular in the racing industry which presents gasket manufacturers with some unique sealing problems. Mr. Gasket, the originator of High Performance Gaskets, has met the challenge and developed a line of gaskets called “Ultra-Seal” to meet the sealing demands of these performance engines. Ultra-Seal is the most advanced, tested and proven gasket on the market today, and has earned the respect of many professional racers.