The 3M™ Wetordry™ Paper Sheet 431Q features extra-fast cutting silicon carbide on a strong C-weight, waterproof paper backing to provide superior finishing for both wet and dry applications on a variety of substrates, including paint, primer, gel coat, metal, and wood.

Used dry or with water, 3M™ Wetordry™ Paper Sheets help you rinse areas of the workpiece and the sheet during use to help prevent dust and debris from clogging the points of the abrasive and reduce airborne dust. These versatile sheets are ideal for surfaces that tend to generate a lot of dust, such as paint and primer. They can also be used dry for finishing metal and gel coats. In the marine industry they are used for sanding old finishes, fine feather edging, and surface work. Silicon carbide is a very hard mineral characterized by sharp points that fracture easily, resulting in freshly exposed sharp edges that cut extra fast and help produce a smooth, professional-looking finish. Silicon carbide products are commonly used for low-pressure applications such as paint prep and finishing on wood and metal. While the mineral has a shorter life than aluminum oxide, it produces a superior finish.

• Versatile sheet can be used wet or dry on paint, primer, gel coat, metal, and wood finishes
• Waterproof backing supports wet applications for decreased loading and a faster cut
• Strong C-weight paper backing offers durability for either hand or machine sanding
• Silicon carbide mineral helps produce a smoother finish than aluminum oxide