7940 Siaair Net-Backed Foam Discs

The 7940 Siaair sanding disc is a premium foam-backed abrasive designed for ultra-smooth finishing in automotive, aerospace, and industrial applications. Its flexible foam structure allows for perfect adaptation to contours and edges, making it ideal for sanding clear coats, primers, composite materials, and even between coats in wet or dry environments. The 7940 Siaair delivers a uniform scratch pattern and minimizes the risk of over-sanding or surface distortion—especially on delicate or curved surfaces. With excellent dust control and long-lasting performance, the 7940 Siaair disc is the go-to choice for professionals who demand precision, consistency, and a flawless finish.