For a smooth, flat surface that doesn’t appear polished, try LOCTITE® Clover® Silicon Carbide Grease Mix. It’s easy to apply and leaves a rust-preventing film on lapped surfaces. Even during extended lapping, the texture and lubrication properties are preserved. It’s perfect for 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.