Scientists say they have found a way to make self-lubricating latex condoms that become slippery on contact. It is thanks to a special, durable coating that should last throughout intercourse ...

Plain bearings and sleeve bearings are made from a variety of materials and are often self-lubricating to provide smooth operation and greater durability. They consist of one part that is built up of ...

Most spherical plain bearings consist of a plain bearing and ball bushing inside a lined, cylindrical housing that minimizes friction or provides self-lubrication. Lubrication-free spherical plain ...