1550 Siapower 5″ Sanding Disc – 0 holes – 320 GRIT – 50/BOX

SiaPower-1550-5-Inch-320-Grit-Sanding-Disc-Solid-Pack

$31.27

(Part #: 8117.6481.0320.01)

1550 Siapower 5″ – 0 holes – 320 GRIT – 50/BOX

The 1550 Siapower sanding disc is built for adaptability and ease of use, offered in a broad range of grits and sizes to fit any workflow. Thanks to its high-quality hook-and-loop backing, the disc attaches securely and can be swapped out in seconds, minimizing downtime.

It is the perfect solution for surface preparation—from smoothing out rough spots to refining a final finish before painting. With its impressive balance of speed and long-lasting durability, the 1550 Siapower is a dependable choice for professionals who need a flawless, high-caliber result across various industrial applications.

Advantages

  • Greater efficiency thanks to application-optimized process steps
  • Highest stock removal rate
  • Performance-enhancing grit mix with ceramic aluminum oxide in the 40–220 grit range
  • Minimal clogging characteristics for lacquer sanding grit range 400-600
  • Sustainable FSC paper for the abrasive backing

 

  • DESCRIPTION

SiaPower 1550 5-Inch Sanding Discs: Professional 320 Grit Ultra-Fine Finishing

Achieve a Master-Class Surface with SiaPower 1550 Precision

The 1550 SiaPower 5″ Sanding Disc in 320 grit is the ultimate abrasive for professional-grade ultra-fine finishing. This grit level is specifically engineered for the final preparation stages, such as sanding between coats of varnish, scuffing clear coats, or smoothing high-quality primers on 125mm orbital sanders. The 0-hole (solid) configuration maximizes the abrasive contact area, ensuring a perfectly consistent scratch pattern across the entire workpiece, which is critical for achieving a mirror-like finish in automotive or high-end cabinetry projects.

Advanced Abrasive Technology for Seamless Refining

Built to meet the rigorous demands of industrial shops, the SiaPower 1550 series features a premium grain coating that resists loading and heat buildup. This ensures the 320 grit remains sharp and effective throughout its use, preventing the “pilling” that often ruins fine finishes. The reliable hook and loop backing provides a firm, flat connection to your 5-inch orbital sander, eliminating wobbles and ensuring that every pass brings you closer to a flawless, showroom-quality surface.

Application:

  • Sanding of coatings and impurities
  • Sanding out unevenness at the edges of repaired surfaces
  • Flatting of body filler and composite materials
  • Fine sanding of primer filler
  • Keying of old and new lacquers
  • Producing a matt finish on old and new lacquers for blending

Use for:

  • Color
  • Primer filler
  • Body filler
  • Lacquer
  • Old lacquer
  • Primer coat
  • Epoxy primer coat
  • Cathodic dip primer coat
  • Plastics
  • Acrylic glass
  • Gelcoat polyester
  • Glass-fiber reinforced plastic (GRP)

Profile

Grit type:
Mixed grit with ceramic content – 40 – 220
Semi-friable aluminum oxide / blue-fired – 240 – 600
White aluminum oxide – 800

Backing:
d-wt paper (FSC-certified) – 40 – 100
c-wt paper (FSC-certified) – 120 – 240
b-wt paper (FSC-certified) – 320 – 800

Coating:
Electrostatic

Bonding:
Resin over resin

Special coating:
Stearate – 240 – 800

Shipping

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