James gasket set, cylinder base. RCM .010"

.010" thick RCM (Rubber Covered Metal). With silicone bead. Type 'B'. James' RCM gaskets consists of a .020" thick stainless spring steel base covered with a .001" thick heat resistant Viton rubber on both sides. A very strong gasket which requires no re-torquing. Gaskets will not become brittle or burn out.