Payen AF460 head gasket. This is the "old reliable" copper 1275 head gasket that has been used since the '60s. A modern material now replaces the asbestos, but it still used by many for street and race applications. Payen brand for quality and long life. The tacky, shellac coating is heat-activated to insure a good seal. No additional coating or sealant is required.
For complete head set with this gasket see SGK0014.