Sia Abrasives | 1950 Siaspeed 3-1/8" Sanding Disc - 0 Holes (50/BOX)

The 1950 Siaspeed 3-1/8" sanding disc is the versatile all-rounder for high stock removal, perfect surface quality, and long life. Coarse grits (40–80) feature a sharp ceramic and aluminum oxide blend for fast cutting; medium grits (P100–P400) use blue-fired semi-friable aluminum oxide for longer life and an excellent finish; and an ingenious stearate coating (from P80) resists clogging to maximize disc life. Solid 0-hole configuration with a Hook & Loop backing, compatible with standard 3-1/8" backing pads.

• 40 Grit — Extra-coarse for rapid stripping of paint, rust, and heavy body filler.
• 60 Grit — Extra-coarse for rapid stripping of paint, rust, and heavy body filler.
• 80 Grit — Coarse stock removal — leveling body filler and stripping old coatings.
• 120 Grit — Medium grit for feather-edging, smoothing primer, and removing coarse scratches.
• 150 Grit — Medium grit for feather-edging, smoothing primer, and removing coarse scratches.
• 180 Grit — Medium-fine refinement — leveling primer filler and keying surfaces for adhesion.
• 220 Grit — Medium-fine refinement — leveling primer filler and keying surfaces for adhesion.
• 240 Grit — Medium-fine refinement — leveling primer filler and keying surfaces for adhesion.
• 320 Grit — Fine sanding between coats and scuffing clear coats for topcoat adhesion.
• 400 Grit — Fine sanding between coats and scuffing clear coats for topcoat adhesion.
• 500 Grit — Very fine final sanding of high-build primers and clear coats before topcoat.
• 600 Grit — Very fine final sanding of high-build primers and clear coats before topcoat.
• 800 Grit — Ultra-fine pre-polish refinement, removing orange peel and dust inclusions.
• 1000 Grit — Ultra-fine pre-polish refinement, removing orange peel and dust inclusions.
• 1200 Grit — Extra ultra-fine polishing preparation on delicate high-gloss surfaces.
• 1500 Grit — Extra ultra-fine polishing preparation on delicate high-gloss surfaces.

Applications

• Aggressive stripping of rust, old paint, and coatings
• Flatting of body filler and composite materials
• Fine sanding of primer filler and keying lacquers
• Blending and producing a matt finish for topcoat adhesion
• Removal of orange peel effect and dust inclusions
• Automotive refinishing, woodworking, and aerospace

Compatible Materials

• Color, lacquer, old lacquer, primer filler, body filler
• Primer coat, epoxy primer coat, cathodic dip primer coat
• Plastics, acrylic glass, Gelcoat polyester, GRP, wood, metal

Product Profile

Grit type: Mixed ceramic (40–80) / Semi-friable aluminum oxide (P100–P400) / White aluminum oxide (P500–1500)  |  Backing: FSC-certified paper / Film (fine grits)  |  Special coating: Stearate from P80  |  Pack: 50/box  |  Brand: Sia Abrasives 1950 Siaspeed