3M 286Q Wetordry polishing papers are comprised of micron graded aluminum oxide and silicon carbide particles that are slurry coated onto a non-woven synthetic backing. Wetordry Polishing Papers provide excellent flexibility for finishing and polishing high contoured surfaces. The pattern coating also lends itself well to polishing soft materials like plastic and soft metal alloys - aluminum, brass, copper etc. Available plain or with PSA (Pressure Sensitive Adhesive) backing. - Aluminum oxide particles coated on a flexible nonwoven backing for finishing and polishing contoured surfaces of softer materials such as plastics, aluminum, brass and copper. PSA backed discs and sheets are available in 2, 3 and 9 micron grades.