Product Overview
The Inside Disk Brush is a circular formed strip brush with filaments directed inward toward the center of the ring. It is manufactured by forming a metal channel strip brush into a precise circular shape. The two ends of the metal channel are accurately cut and finished so they align closely at the joint, minimizing sharp protrusions and allowing the ring to close neatly. This creates continuous inward-facing contact around shafts, cables, tubes and other round
Also known as an internal ring brush, inner ring brush or fill-inwards strip brush, this design provides 360° contact around the center opening for sealing, cleaning, wiping, guiding and dust control. The center hole can be manufactured in different diameters or completely closed (D2 = 0 mm) when required, allowing the inward-facing bristles to provide contact around very small rods, shafts or other components passing through the brush.
The total diameter, center opening, metal channel dimensions and filament configuration can all be customized for different applications. Galvanized steel and stainless steel channels are available, together with nylon, polypropylene (PP), steel wire and abrasive filament options.
Product Features
- 360° Inward-Facing Bristles – Filaments are directed toward the center opening to provide continuous contact around shafts, cables, tubes and other cylindrical components for sealing, cleaning and guiding.
- High-Density Fill – Densely packed filaments provide consistent contact around the circumference of the center opening for reliable sealing and wiping performance.
- Custom Center Opening – The hole diameter can be customized according to the component passing through the brush and can be reduced to 0 mm for a fully closed brush center when required.
- Precision-Formed Ring – The metal channel strip brush is accurately formed into a circular ring to maintain consistent brush geometry and inward filament orientation.
- Precision-Finished Channel Ends – The two ends of the metal channel are accurately cut and finished to reduce sharp protrusions and achieve a clean, closely aligned joint, improving handling safety and allowing the ring to close neatly.
- Multiple Material Options – Galvanized steel or stainless steel channels can be combined with nylon, polypropylene (PP), steel wire or abrasive filaments according to the application.
Specifications
| Specification | Available Options |
|---|---|
| Product Type | Inside Disk Brush / Internal Ring Brush |
| D1 – Total Diameter | 20–600 mm, Customizable |
| D2 – Hole Diameter | 0–590 mm, Customizable |
| b – Backing Width | 2, 3, 4, 5, 6, 7, 8, 10, 12 mm and Custom Sizes |
| c – Backing Height | 2, 3, 4, 5, 6, 7, 8, 10, 12 mm and Custom Sizes |
| BH – Bristle Height | Customizable |
| Backing Material | Galvanized Steel / Stainless Steel |
| Bristle Material | Nylon (PA) / Polypropylene (PP) / Steel Wire / Abrasive Filaments |
| Bristle Color | Black / White / Red / Green / Other Colors |
| Bristle Diameter | Customizable |
| Bristle Direction | Inward-Facing |
| Ring Configuration | Custom Formed According to Drawing, Sample or Application |
Materials
Metal Channel: The backing of the inside disk brush can be manufactured from galvanized steel or stainless steel. Galvanized steel is suitable for general industrial applications, while stainless steel is available for applications requiring improved corrosion resistance or use in more demanding environments.
Filament Materials: Different filament materials can be selected according to the required function. Nylon (PA) is commonly used for sealing, wiping and guiding because of its flexibility and wear resistance. Polypropylene (PP) is available for applications requiring good chemical resistance, while steel wire can be used for more aggressive cleaning applications.
Abrasive Filaments: Abrasive nylon filaments can also be used when the ring brush is required for light deburring, surface cleaning or finishing around cylindrical components. Filament diameter, density and trim length can be customized according to the required contact pressure and working conditions.
Applications
The Inside Disk Brush provides continuous inward-facing contact around round or cylindrical components, making it suitable for sealing, cleaning, wiping, guiding and surface treatment applications. The center opening and filament configuration can be customized according to the diameter and movement of the component passing through the brush.
- Shaft and Rod Sealing – Provides 360° contact around rotating or moving shafts and rods to help reduce the passage of dust, debris and other contaminants.
- Tube and Pipe Cleaning – Inward-facing filaments can contact the outer surface of tubes and pipes for wiping, cleaning or guiding during production and handling.
- Cable and Wire Pass-Through – Creates a flexible brush barrier around cables and wires passing through machinery, panels or other openings.
- Guiding Cylindrical Components – The surrounding bristles can help guide and stabilize rods, tubes and other round components while allowing them to move through the center opening.
- Dust and Debris Control – Suitable for machinery and equipment openings where a flexible 360° barrier is required around a moving component.
- Spray and Splash Control – Can be configured to help contain liquid spray or splash around shafts, tubes and other cylindrical components.
- Arrow Rest Brushes – Small-diameter internal ring brushes can also be customized for use as full-containment arrow rest brushes in archery equipment.
Custom Options
BaJie Brush manufactures inside disk brushes according to the required component diameter, installation space and working conditions. Customers can provide a drawing, existing brush sample or application details, and we can adjust the ring dimensions, center opening, filament configuration and metal channel accordingly.
- Total Diameter (D1) – The overall ring diameter can be customized from 20 to 600 mm according to the available installation space and application requirements.
- Center Opening (D2) – The hole diameter can be customized from 0 to 590 mm. For very small rods or components, D2 can be reduced to 0 mm to create a fully closed brush center, allowing the inward-facing filaments to surround and contact the passing component.
- Metal Channel Size – Backing width and height can be selected from standard sizes or manufactured according to the required ring structure and installation conditions.
- Filament Configuration – Filament material, diameter, trim height and density can be adjusted according to the required sealing, cleaning, guiding or surface-treatment performance.
- Backing Material – Choose galvanized steel or stainless steel according to the operating environment and corrosion-resistance requirements.
- Custom Manufacturing – Ring brushes can be produced according to drawings, samples or application requirements, including non-standard dimensions and specialized filament configurations.
Quality Control
Each inside disk brush is inspected during production for ring dimensions, filament distribution and overall forming accuracy. Consistent inward-facing bristle distribution is important for maintaining uniform contact around the center opening.
Particular attention is also paid to the joint between the two ends of the metal channel. The channel ends are accurately cut and finished to minimize protruding or sharp sections and help the two ends align closely when the strip brush is formed into a ring.
For custom orders, key dimensions such as total diameter (D1), center opening (D2), backing dimensions and bristle height are checked according to the confirmed drawing, sample or specifications.
Frequently Asked Questions
What is the difference between an inside disk brush and an outside disk brush?
An inside disk brush has bristles facing inward toward the center of the ring, providing 360° contact around shafts, rods, cables, tubes and other cylindrical components. An outside disk brush has bristles facing outward from the ring and is typically used to contact surfaces around its outer circumference.
Can the center of an inside disk brush be completely closed?
Yes. The center opening (D2) can be customized according to the application and can be reduced to 0 mm, creating a fully closed brush center. When a small rod, shaft or other component passes through the brush, the flexible inward-facing bristles move around the component and maintain surrounding contact.
What materials are available for inside disk brushes?
The metal channel can be manufactured from galvanized steel or stainless steel. Available filament materials include nylon (PA), polypropylene (PP), steel wire and abrasive filaments. Filament diameter, color, density and bristle height can also be customized.
What dimensions should I provide for a custom inside disk brush?
The main dimensions are total diameter (D1), center opening (D2), backing width (b), backing height (c) and bristle height (BH). Please also provide the required filament material, filament diameter, quantity and application conditions. A drawing, sample or reference photo can help us confirm the correct brush configuration.
Can you manufacture an internal ring brush from a drawing or sample?
Yes. We can manufacture custom internal ring brushes according to drawings, existing samples or application requirements. Ring diameter, center opening, metal channel, filament material, bristle height and density can all be adjusted for the required application.
