Reusable neoprene rubber with stainless steel core to prevent the gasket from pushing out when torqued down
Eliminates leakage caused by internal pressure fluctuation
Will not tear or collapse
Reusable design so there is no need to replace the gasket each time you remove a valve cover
Fits 1960-86 small block Chevy style heads (4 perimeter bolts)
Sold as Pair