TufBak T461 paper waterproof sheet for tackling sanding and finishing in wet applications. This waterproof paper sheet has a silicon carbide abrasive for consistent cutting and a tough C-weight backing that resists curling in humid conditions. A resin bond system ensures stable adhesion between the abrasive and backing while permitting the paper to flex to accommodate non-flat surfaces. Select the hardy TufBak T461 for home, leisure and commercial applications on super alloys, woods, metals, fiberglass, and composites.