Profile: Clark Seals Ltd. specializes in industrial seal design and manufacturing services. Our product line includes bearing seal and oil seals. Our brands include Excluder Seals™ and Sheave Seals™. Our Sheave Seals® are designed for use with tapered roller bearing assemblies. Our Excluder Seals® are designed for tapered, cylindrical & spherical roller bearings and for deep grooved, self-aligning, maximum capacity & double-row ball bearings. Our grease retainer seals are designed to retain grease in the tapered roller bearing cavity.