1550 Siapower 6″ Sanding Disc 320 Grit – 48 Hole Pack

Superior Finishing with Blue-Fired Technology

The 1550 Siapower 6″ sanding disc (320 Grit) marks a shift in abrasive engineering designed specifically for fine finishing. Unlike the coarser grits, this version utilizes high-quality semi-friable aluminum oxide (blue-fired) grain. This specific grit type is formulated to deliver a sharp, precise cut that produces a consistent, high-quality surface finish. It is the ideal abrasive for professionals looking to achieve a perfectly smooth substrate before the final painting or polishing stages in automotive and industrial applications.

Anti-Clog Stearate Coating and Flexible Backing

To ensure maximum efficiency and longevity during fine sanding, the 320-grit disc features a specialized stearate coating. This additive significantly reduces friction and prevents dust from adhering to the abrasive surface (clogging), which is critical when sanding primers and topcoats. Supported by a flexible b-wt FSC-certified paper backing, this disc conforms easily to complex curves and contours, allowing for uniform sanding pressure and preventing burn-through on delicate edges.

Flawless Lacquer Preparation and Matting

This disc is the go-to solution for critical surface refinement tasks. It excels at producing a matte finish on old and new lacquers to facilitate seamless blending and keying surfaces for recoating. Whether working on acrylic glass, gelcoat polyester, or cathodic dip primer coats, the 1550 Siapower 320 grit ensures a uniform, fine scratch pattern. The 48-hole configuration further enhances performance by efficiently extracting fine dust particles, keeping the work environment clean and the abrasive sharp.