Abstract: A system for identifying, carrying and storing keys including a portable holder having a body with a central portion and outer peripheral edge. The body includes at least one receptacle extending from the outer peripheral edge toward the central portion. The receptacle includes a bore and a locking shoulder within the bore. The system includes at least one insert configured to be insertable into and removed from a receptacle. The insert includes a member engaging the locking shoulder so as to lock the insert in the receptacle. An element for coupling at least one key to the insert is also provided.

Abstract: Self-lubricating bearings, such as journal-type bearings are obtained by molding under pressure at elevated temperatures a substantially homogeneous blend of from about 70 to 95% of an ultra high molecular weight ethylene polymer and from about 5 to 30% of a normally solid lubricant which can be a wax, fat or mixtures thereof, or a mixture of either or both of these lubricants with a grease. The bearings exhibit excellent dimensional stability, good wear resistance, and a surface which is not oily to the touch. The bearings are self-lubricating, slowly releasing lubricant at temperatures developed in ordinary use.