Disclosed are polyfunctional sulfur-containing epoxies and compositions containing polyfunctional sulfur-containing epoxies. A cam sprocket can be driven by an endless loop power transmission member connected to a drive sprocket mounted for rotation with the engine 5 crankshaft. Mbf layers are determined to use breadth-first search and Mdf layers to use depth-first search. , an objective fluid sealing surface and a quenching fluid sealing surface are formed in a stationary sealing ring, and a quenching fluid passes through a sealing groove provided between the sealing surfaces.