Schaefer Brush 43764 Spiral Tube Brush 4 in Nylon

Product Description

The SCHAEFER BRUSH 43764 is a single stem spiral tube brush designed for cleaning the interior walls of tubes, pipes, and cylindrical passages. The brush measures 4 inches in diameter with an overall length of 7.25 inches, including a 5-inch bristle section. Nylon bristles provide effective scrubbing action on a range of surfaces without scratching softer base materials. The 1/4-inch NPSM male connection allows it to be threaded onto compatible extension handles or cleaning equipment. HVAC technicians, plumbers, and maintenance professionals reach for this brush when clearing debris, scale, and buildup from condenser tubes, drain lines, and similar cylindrical components.

This tube brush suits residential and light commercial maintenance tasks where a 4-inch diameter bore needs mechanical cleaning. Typical applications include condenser tube cleaning, heat exchanger maintenance, drain line clearing, and general pipe interior scrubbing. The nylon bristle construction handles both wet and dry cleaning environments, making it a practical fit for both HVAC and plumbing service work.

Key Features

• 4-inch brush diameter sized for standard condenser tubes and similar cylindrical bores
• 7.25-inch overall length with a 5-inch bristle cleaning section
• Nylon bristles resist moisture and provide firm scrubbing without metal contamination
• 1/4-inch NPSM male connection for use with compatible extension handles or drill adapters
• Single stem spiral construction maintains consistent contact along the bore wall

Compatibility

Designed as a standard-style tube brush for any cleaning setup that accepts a 1/4-inch NPSM male threaded connection. Suitable for use with compatible extension rods and power drill adapters used in HVAC and plumbing service applications.

Installation Notes

This brush is installed by hand or power drill by a qualified HVAC technician or plumber. Before cleaning, isolate and depressurize the system or pipe section being serviced in accordance with applicable codes. Thread the brush onto a compatible handle or adapter before inserting into the bore. Do not force the brush into a bore smaller than the rated brush diameter, as this can damage bristles and reduce cleaning effectiveness.