3M™ Wetordry™ Paper Sheet 431Q, 150 C-weight, 9 in x 11 in

• 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 provides durability for either hand or machine sanding
• Silicon carbide mineral produces a smoother finish than aluminum oxide
• Sheet is standard 9 x 11 and can be sized according to task

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 enable the user to rinse areas of the workpiece and the sheet during use to prevent dust and debris from clogging the points of the abrasive and reduce air-borne dust. They also simultaneously produce a faster cut. These versatile sheets are ideal on surfaces that tend to generate a lot of dust, such as paint and primer. You can also use them dry for finishing metal and gel coats. In the marine industry you can use them for sanding old finishes, fine feather edging, and surface work. You can cut the standard 9 inch x 11 inch sheets to size for the application.

Silicon carbide is a very hard mineral characterized by sharp points that fracture easily. This results in freshly exposed sharp edges that cut extra fast and 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.

3M™ backs their Wetordry™ products with their proprietary waterproof paper backing that supports both wet and dry applications. Lighter weight than cloth and smooth rather than textured, paper backing is preferable for lighter applications such as finishing and paint prep. At the same time, many such applications produce a significant amount of dust, clogging the abrasive points and creating an inferior work environment. You can minimize these effects by sanding with water to rinse dust away from the workpiece and the abrasive surface.