Unitized Fiberglass Backed Disc – Type 27

Professional Unitized Non-Woven Disc for Deburring, Blending & Surface Finishing

GC Abrasives Unitized Fiberglass Backed Discs combine a durable unitized non-woven abrasive structure with a strong fiberglass backing to deliver controlled material removal, consistent finishing and reliable performance in professional metalworking applications.

The abrasive body is manufactured from multiple layers of non-woven synthetic fiber impregnated with selected abrasive grain and resin, then compressed to form a strong, uniform unitized structure. The fiberglass backing provides additional support and stability for use on compatible right-angle grinders.

Compared with conventional coated abrasives, the open non-woven structure helps resist loading and reduces excessive heat buildup. This makes the disc particularly suitable for applications where controlled cutting action and surface quality are both important.

GC Abrasives Unitized Fiberglass Backed Discs are available in different densities, abrasive grains and grades for applications ranging from fine finishing and cleaning to blending, edge reduction and heavy-duty deburring.

⚙ Product Features

Unitized Non-Woven Construction

Multiple layers of abrasive non-woven material are compressed and bonded into a strong unitized structure, providing consistent abrasive action throughout the service life of the disc.

Fiberglass Reinforced Backing

The fiberglass backing provides strength and support during operation, helping maintain stability when used on compatible right-angle grinders.

Controlled Material Removal

The unitized structure provides controlled cutting action, making the disc suitable for deburring and blending while helping preserve the shape and geometry of the workpiece.

Consistent Surface Finish

The three-dimensional non-woven abrasive structure continually exposes abrasive material during use, helping achieve uniform and repeatable finishing results.

Reduced Loading

The non-woven construction helps resist loading when processing metal surfaces, maintaining effective abrasive action for longer periods.

Cooler Cutting

The open non-woven structure helps dissipate heat during operation, reducing excessive heat buildup compared with many conventional coated abrasive products.

Product Range

GC Abrasives Unitized Fiberglass Backed Discs are available in multiple densities and abrasive grades to match different surface treatment requirements.

Available Sizes

Additional specifications may be available according to customer requirements.

Understanding the Grade System

The grade designation combines density and abrasive type, allowing the appropriate disc to be selected according to the required cutting action and surface finish.

S – Silicon Carbide

Silicon Carbide provides a sharp abrasive action and is particularly suitable for controlled finishing and polishing applications.

Available configurations include:

2S Fine · 3S Fine · 6S Fine

Typical applications include:

• Fine surface finishing

• Scratch blending

• Weld finishing

• Cleaning

• Polishing

• Surface preparation

A – Aluminum Oxide

Aluminum Oxide provides durable abrasive performance and is particularly suitable for general metalworking, blending and deburring.

Available configurations include:

2A Medium · 6A Medium · 8A Coarse

Typical applications include:

• Light deburring

• Heavy-duty deburring

• Edge reduction

• Surface blending

• Scale and oxidation removal

• Controlled material removal

Selecting the Right Density

Soft Density

2S Fine / 3S Fine

Soft-density unitized discs provide greater conformability and controlled finishing action.

Recommended for:

• Fine finishing

• Cleaning

• Polishing

• Scratch blending

• Surface preparation

• Smoothing edges

Medium Density

2A Medium

Provides additional rigidity for applications requiring more cutting action while maintaining controlled surface finishing.

Recommended for:

• Light deburring

• Edge reduction

• Surface blending

• Oxidation removal

• General metal finishing

Hard Density

6S Fine / 6A Medium / 8A Coarse

Higher-density construction provides increased rigidity for more demanding deburring and finishing operations.

Recommended for:

• Heavy-duty deburring

• Weld finishing

• Edge breaking

• Controlled material removal

• Aggressive blending

• Surface preparation

Typical Applications

GC Abrasives Unitized Fiberglass Backed Discs are suitable for:

Deburring
Edge Breaking
Weld Blending
Weld Finishing
Scratch Blending
Surface Cleaning
Rust Removal
Oxidation & Scale Removal
Surface Preparation
Fine Finishing
Polishing
Controlled Material Removal

The different density and abrasive configurations allow the same product family to cover applications from fine cosmetic finishing to more aggressive deburring.

Suitable Materials

GC Abrasives Unitized Fiberglass Backed Discs can be selected for processing a broad range of materials, including:

Ferrous Metals

• Stainless Steel

• Mild Steel

• Carbon Steel

• Tool Steel

• Cast Iron

• Titanium

• Nickel Alloys

Non-Ferrous Metals

• Aluminum

• Copper

• Brass

• Other Non-Ferrous Alloys

The appropriate abrasive type and density should be selected according to the workpiece material and desired surface finish.

Recommended Machines

Designed primarily for use with:

Right-Angle Grinders

Always ensure that the disc diameter, arbor size and maximum operating speed are compatible with the selected power tool.

Why Choose GC Abrasives Unitized Fiberglass Backed Discs?

Consistent Performance

The compressed unitized construction provides consistent abrasive distribution throughout the disc, helping maintain predictable finishing performance.

From Fine Finishing to Heavy Deburring

Multiple density and abrasive configurations allow users to select the appropriate disc for anything from delicate finishing to aggressive deburring.

Reduced Loading

The non-woven abrasive construction helps resist loading and maintain effective abrasive action during metalworking.

Cooler Operation

The open non-woven structure helps reduce excessive heat buildup, protecting both the abrasive and the workpiece during finishing operations.

Strong Fiberglass Backing

Fiberglass reinforcement provides the support required for stable operation on compatible right-angle grinders.

Professional Metalworking Solution

Designed for metal fabrication, stainless steel processing, welding, machinery manufacturing and industrial maintenance applications.

Recommended Industries

Metal Fabrication

Stainless Steel Processing

Welding & Weld Finishing

⚙️ Machinery Manufacturing

Automotive & Transportation

✈️ Aerospace & Precision Manufacturing

Industrial Maintenance

️ General Engineering

Safety Recommendations

Always inspect the disc before use and never use damaged or deformed abrasive products.

Ensure that the disc is properly mounted and that the grinder speed does not exceed the maximum operating speed marked on the product.

Always use the appropriate machine guard and personal protective equipment, including eye protection, hearing protection, gloves and suitable protective clothing.

Follow all operating and safety instructions supplied with the abrasive product and power tool.

OEM & Custom Solutions

GC Abrasives provides Unitized Fiberglass Backed Discs for professional distributors, industrial users and abrasive brands.

OEM and customization options may include:

• Disc diameter

• Arbor hole

• Abrasive grain

• Density

• Grade

• Product labeling

• Private label

• Packaging

• Bulk supply

Contact GC Abrasives with your application, workpiece material and desired finish for product selection and OEM inquiries.