Replacement Boiler gaskets, used in CB boilers or Cleaver Brooks. Topog-e gaskets, the original molded rubber gasket and the new Topog-e series 2000 graphite gasket. We stock fiberglass Rope and tape. Ceramic rope and strip. CB FIRESIDE KITS CB GASKET KITS. CB and Cleaver Brooks are registered trademarks of the Cleaver-Brooks division of Aqua-Chem, Inc. The products described herein are not...