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3M™ Wetordry™ PSA Paper Disc 431Q features silicon carbide on a strong, waterproof paper backing to provide superior finishing for both wet and dry applications on a variety of substrates.

• Pressure Sensitive Adhesive (PSA) backing provides easy attachment to random orbital sander
• Silicon carbide mineral produces a finer finish than aluminum oxide
• Strong C-weight paper backing provides durability for either hand or machine sanding
• Versatile disc can be run wet or dry on paint, primer, gel coat, metal, and wood
• Waterproof backing supports wet applications for decreased loading and a faster cut