7940 Siaair 5″ Foam Sanding Disc – 360 Grit Hook & Loop

The 7940 Siaair 5″ Sanding Disc (360 Grit) is expertly engineered to bridge the gap between aggressive sanding and final polishing. At the core of this abrasive is a revolutionary foam backing that cushions the sanding action. This unique design allows the disc to adapt perfectly to curves, edges, and complex contours without the risk of sanding through corners or creating pressure marks. Whether you are working on automotive body panels or intricate woodworking projects, the pressure-equalizing foam ensures a consistent, uniform finish every time.

High-Performance Wet and Dry Capabilities

Versatility is key in professional workshops, and the 7940 Siaair delivers by excelling in both wet and dry sanding applications. The special structure allows the foam to absorb water, ensuring active cooling during the sanding process while significantly reducing dust when used dry. Engineered with advanced aluminum oxide grain and a resin-over-resin bond, this disc resists clogging better than standard paper abrasives. This durability extends the life of each disc, reducing the frequency of changes and lowering your overall material costs.

Professional Surface Prep for Paints and Composites

Designed for the most demanding finishing tasks, this 360 grit disc is the ideal choice for matting surfaces and preparing for polishing. It creates a precise, even scratch pattern that provides excellent mechanical adhesion for subsequent layers. It is highly effective on a wide range of materials, including conventional lacquers, gelcoat polyester, composite materials, and acrylic glass. From blending repairs in clear coats to fine sanding primer fillers in hard-to-reach areas, the 7940 Siaair ensures a professional-grade result.