H3. H1 lubricants are food-grade lubricants used in food-processing environments where there is the possibility of incidental food contact. H2 lubricants are industrial lubricants used on equipment and machine parts in locations with no possibility of contact. H3 lubricants are food-grade lubricants, typically edible oils, used to prevent rust on hooks, trolleys and similar equipment. Water-soluble grease analogs In some cases, the lubrication and high viscosity of a grease are desired in situations where non-toxic, non-oil based materials are required. Carboxymethyl cellulose, or CMC, is one popular material used to create a water-based analog of greases. CMC serves to both thicken the solution and add a lubricating effect, and often silicone-based lubricants are added for additional lubrication. The most familiar example of this type of lubricant, used as a surgical and personal lubricant, is K-Y Jelly. Cork grease Cork grease is a lubricant used to lubricate cork, for example in musical wind instruments. It is usually applied using small lip-balm/lip-stick like applicators. See also Bearing (mechanical) Lubrication Lubrication theory Penetrant Society of Tribologists and Lubrication Engineers Timken OK Load References External links U.S. Army Corps of Engineers grease definition and application guide (PDF file) New location: Navigate to USACE Home > [Publications] > [Engineer Manuals] > [EM 1110-2-1424 Lubricants and Hydraulic Fluids] U.S. Army Corps of Engineers grease definition and application guide (PDF file) The Grocer's Encyclopedia online. Interflon USA "What is the difference between oil and grease?" Greases Tribology