The offered Head Gasket Sheets are very thin sheets of stainless steel held together and coated with specialized surface coatings. They also have embossments to help seal when they are torqued into place. The Head gasket provides the seal between the engine block and cylinder head (s). Its purpose is to seal the combustion gases within the cylinders and to avoid coolant or engine oil leaking into the cylinders. The offered sheets are easy to place wherever needed. The Head Gasket Sheets are easy to use and made for providing high end performance. They are efficient and very durable.