How to Choose the Right Industrial Brush Filament for Your Application

Why Filament Material Matters

Choosing the right bristle material is the single most important decision when specifying an industrial brush. The wrong filament can lead to premature wear, surface damage, or ineffective cleaning — all of which cost time and money.

Common Filament Types and Their Applications

Nylon 6/12

Nylon 6/12 is the workhorse of industrial brush filaments. It offers excellent abrasion resistance, good flexibility, and performs well in wet or dry conditions. Ideal for general-purpose cleaning, conveyor brushes, and light to medium scrubbing applications.

Polypropylene (PP)

Polypropylene is a cost-effective option with good chemical resistance. It is softer than nylon and works well in wet environments. Common applications include light cleaning, dusting brushes, and food-grade applications where stiffness is not critical.

Abrasive Filament (Silicon Carbide / Aluminium Oxide)

Abrasive filaments contain abrasive grit embedded in nylon. These are the heavy-duty option for deburring, surface finishing, and removing tough deposits. Pamin manufactures abrasive brushes with grit sizes from 46 to 180 for varied aggression levels.

Steel Wire

Carbon steel, stainless steel, and brass wire filaments provide the most aggressive cleaning action. Used for heavy rust removal, weld cleaning, and industrial surface preparation. Stainless steel is preferred for food-grade and corrosion-resistant applications.

Key Factors to Consider

• Operating temperature: Nylon softens above 150°C; PP above 90°C
• Chemical exposure: PP resists acids and alkalis; nylon absorbs moisture
• Surface sensitivity: Match filament stiffness to substrate hardness
• Wet vs. dry: Some filaments perform better in specific conditions

Still unsure which filament to choose? Contact our engineering team for a free consultation. We will recommend the optimal material for your specific application.