I purchased this gasket for some engine repairs and was very impressed with the quality. My analysis of this product showed that it exceeded my expectations for a replacement gasket. It fit perfectly and sealed tightly preventing any leaks. This gasket is a great VALUE for its price .The only downside is that it does not come with any instructions, but with a little research, installation was a breeze. Overall, I highly recommend this gasket for anyone in need of a reliable replacement. Industrial and Scientific users will appreciate the quality and value..