LOCTITE Clover silicon carbide grease mix abrasive pastes are the preferred abrasives for fast cutting all but the hardest and toughest metals. The result is a smooth flat surface. LOCTITE Clover silicon carbide grease mix is the most widely used. It retains the texture and lubrication properties during extended lapping. Typical applications include lapping, honing and grinding valve seats, gear teeth, dowel holes in dies, bushings, flat surfaces on seals and castings, machining parts, shafts, knives and cutting blades.