Schaefer Brush 43851 Spiral Tube Brush 2.5in Stainless

Product Description

The SCHAEFER BRUSH 43851 is a double stem spiral tube brush designed for cleaning the interior of tubes, pipes, and cylindrical passages. The brush features a 2.5-inch diameter working head and a 4.5-inch brush length, giving it a 7.25-inch overall length. Stainless steel bristles and a stainless steel core construction make it suitable for demanding cleaning tasks where corrosion resistance and bristle durability are required. A 1/4-inch male NPSM threaded connection allows the brush to attach to standard extension rods or power drive equipment. This tool is commonly used by HVAC technicians, plumbers, and mechanical contractors for tube and pipe maintenance work.

This tube brush is suited for residential and commercial applications that require internal pipe or tube cleaning, such as boiler tube maintenance, heat exchanger service, and condenser tube cleaning. The spiral double stem design provides consistent radial contact along the entire brush length, helping dislodge scale, deposits, and debris from tube walls. The 1/4-inch NPSM male fitting allows integration with extension handles for reaching into deeper assemblies without removing equipment from service unnecessarily.

Key Features

• 2.5-inch brush diameter for cleaning tubes in that bore range
• 4.5-inch brush length provides extended contact area per pass
• Stainless steel bristles resist corrosion and handle abrasive deposits
• Stainless steel core construction for durability under mechanical stress
• 1/4-inch male NPSM threaded connection compatible with standard extension rods and power drives
• Double stem spiral design maintains consistent radial pressure against tube walls

Compatibility

Designed as a replacement or standard-service tube brush for use with 1/4-inch NPSM extension rod systems in tube and pipe cleaning applications.

Installation Notes

Thread the 1/4-inch male NPSM fitting securely onto a compatible extension rod or drive handle before use. Shut down and isolate any system being serviced before inserting the brush into tubes or heat exchanger passages. Use at the appropriate rotation speed if power-driving to avoid bristle deformation or tube wall damage. Inspect bristles for wear or splaying after use in abrasive or heavily fouled conditions.