1550 Siapower 6″ Sanding Disc 400 Grit – 48 Hole Pack

The 1550 Siapower 6″ sanding disc (400 Grit) is expertly crafted for high-quality fine finishing applications. Utilizing semi-friable aluminum oxide (blue-fired) abrasive grain, this disc delivers a sharp, consistent cut that is essential for refining surfaces without creating deep scratches. It is the premier choice for automotive and industrial professionals who require precision when preparing primer fillers or smoothing surfaces prior to the final topcoat application.

Advanced Stearate Coating and Flexible Backing

To combat the common issue of clogging during fine sanding, the 400-grit disc is treated with a specialized stearate coating. This active agent acts as a lubricant and anti-loading layer, ensuring the abrasive remains clean and effective for longer periods. Paired with a lightweight, flexible b-wt FSC-certified paper backing, this disc conforms effortlessly to contours and edges, providing uniform pressure and a flawless finish even on complex shapes.

Ultimate Control for Blending and Matting

This abrasive is specifically designed for critical surface preparation steps such as producing a matte finish on old and new lacquers for blending. The 1550 Siapower 400 grit excels at keying surfaces to ensure maximum adhesion for subsequent layers. Its 48-hole dust extraction pattern works in tandem with the stearate coating to keep the work surface cool and dust-free, making it highly effective on sensitive materials like acrylic glass, gelcoats, and cathodic dip primer coats.