Superior quality gasket sets from Athena Head gaskets feature rubber-coated spring steel constructionSoft steel base gaskets are rubber coatedSteel core materials feature high spring-back and superior tensile strengthRevolutionary transparent coating guarantees a perfect seal even at extremely high temperaturesHigh-temperature blue silicone beading on most critical flat gasketsTop-end gasket kits include all necessary gaskets to rebuild the top end of the motor from the base gasket up, including all rubber gaskets such as valve cover gaskets, O-rings and valve stem seal