Abrasive flap disc pack, Bosch F355 — for coatings and composites, 5 pieces

The Bosch F355 abrasive flap disc pack contains five silicone carbide grit-coated discs designed for working on coatings and composite materials. Manufactured for use with angle grinders and random orbital sanders, these flap discs are intended for surface preparation, keying, smoothing and finishing of varnish, paint, primer, fillers and plastics as well as light work on ferrous and non-ferrous substrates. The electrostatic open-coated construction promotes dust extraction and reduces clogging while the synthetic resin bond and F-/C-paper backing provide consistent wear resistance and stable sanding behaviour.

Advantages

The F355 flap discs deliver precise material removal with a uniform finish thanks to high-quality silicone carbide grit and an anti-static open coating that encourages dust clearance. The combination of a synthetic resin bond and paper backing ensures durability and controlled abrasion for heavy-duty tasks, while the anti-static closed coating minimizes dust adherence to the workpiece and machine. Supplied as a pack of five, these discs offer ready replacements for continuous workflow.

Suitable for

• Sanding between coats of varnish and paint
• Keying and light sanding of composite materials
• Paint and primer removal and surface preparation
• Leveling and blending fillers and plastics
• Precision finishing on ferrous and non-ferrous materials

Key specifications

• Abrasive: silicone carbide grit for effective removal on hard coatings and composites
• Coating type: electrostatic open-coated surface to reduce clogging and enhance dust extraction
• Backing material: F-/C-paper for stable sanding behaviour
• Bonding: fully synthetic resin for improved wear resistance in demanding applications
• Pack quantity: 5 discs
• Compatible tools: angle grinders and random orbital sanders for finishing and preparation tasks

How to use

Select a disc suitable for the grinder or sander mounting system and securely attach it according to the tool manufacturer’s instructions. Start with moderate pressure and move the disc evenly across the surface to achieve uniform keying or smoothing. Monitor the disc condition and replace when abrasive performance declines or the backing shows wear. Ensure the workpiece is stable and use appropriate feed speed to avoid burning coatings or removing excessive material.

Usage recommendations

Use suitable personal protective equipment such as eye protection, dust mask and gloves. For best results on coatings and composites, combine the F355 discs with effective dust extraction and moderate feed rates; test on a small area first to confirm compatibility with the substrate and coating system.