Silverline Flap Sanding Grinding Disc 115mm 80 Grit Aluminium Oxide 792089

Silverline Flap Sanding Grinding Disc 115mm 80 Grit Aluminium Oxide 792089

Barcode: 5060012967383

MPN: 792089

Overview:

The Silverline 115mm 80 Grit Aluminium Oxide Flap Sanding and Grinding Disc 792089 a heavy-duty flap disc designed for controlled sanding and blending with 4 1/2" (115mm) hand-held angle grinders. Manufactured from aluminium oxide abrasive cloth bonded to a tough fibreglass backing disc, it delivers reliable cutting performance with a long-life, self-renewing flap design that helps maintain consistent results as the disc wears. Ideal for sanding, finishing, stock removal and weld dressing, the 80 grit grade is a great choice when you want a cleaner finish after initial grinding or preparation. Suitable for steel, cast iron, alloys, wood and more, and it fits directly to a compatible angle grinder with no additional backing plate required.

Key Features

• 80 grit for general sanding, blending and finishing preparation

• Aluminium oxide abrasive cloth for consistent cutting performance

• Long-life self-renewing flap design for steady results as it wears

• Tough fibreglass backing disc with steel reinforcing ring

• Suitable for sanding, grinding, stock removal and weld dressing

• Fits 115mm (4 1/2") angle grinders with no backing plate required

• Semi open coat finish helps reduce loading on dusty surfaces

Specifications

• Brand: Silverline

• MPN: 792089

• Barcode: 5060012967383

• Disc Diameter: 115mm (4 1/2")

• Grit: 80 grit

• Max Speed: 13,300rpm

• Backing Weight: J

• Grain Type: Aluminium oxide

• Bond Type: Resin

• Surface Finish: Semi open coat

• Construction: Abrasive segments bonded to fibreglass disc with steel reinforcing ring

• Backing Plate Required: No

Applications

• Blending and smoothing welds after initial dressing

• General sanding and surface preparation on metalwork

• Deburring and edge blending

• Preparing surfaces prior to painting or coating

• Suitable for steel, cast iron, alloys, wood and similar materials (task dependent)

How to Use

• Check your angle grinder and guard are suitable for 115mm discs

• Ensure the grinder’s no-load speed does not exceed 13,300rpm

• Fit the flap disc securely following your grinder manufacturer instructions

• Let the grinder reach full speed before contacting the workpiece

• Use steady, controlled pressure and keep the disc moving to reduce heat build-up

• Step up to finer abrasives if an even smoother finish is required

Grit Available

• 40 grit – 199877

• 60 grit – 793761

• 80 grit – 792089

Grit Guide

40 grit being coarse 120 grit being the finest

Silverline 115mm 80 Grit Aluminium Oxide Flap Disc – Key FAQs

• What is 80g best used for on a flap disc?
  80 grit is ideal for blending and preparation where you want a smoother finish than 40 or 60 grit—great for refining welds and preparing surfaces before painting or coating.

• Do I need a backing plate with this flap disc?
  No. This flap disc mounts directly to a compatible 115mm angle grinder, so no additional backing plate is required.

• What materials can I use the Silverline 792089 flap disc on?
  It’s suitable for steel, cast iron and alloys, and can also be used on materials like wood depending on the task and the finish required.

• Why is the 13,300rpm rating important?
  It indicates the maximum safe operating speed. Always ensure your grinder’s no-load RPM is at or below the disc rating before use.

• How does a flap disc compare to a resin fibre disc?
  Flap discs often last longer and can blend as they grind, helping leave a cleaner finish and reduce harsh gouges compared with many fibre discs.

• How do grit grades work for flap discs?
  Lower numbers are coarser for faster removal, while higher numbers are finer for finishing. This disc is 80 grit, and the range typically progresses up to around 120 for finer work.

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