Schaefer Brush 43760 Spiral Tube Brush 3.5in Nylon

Product Description

The SCHAEFER BRUSH 43760 is a single stem spiral tube brush designed for cleaning the interior of tubes, pipes, and cylindrical passages. Built with nylon bristles and a nylon brush body, it delivers consistent scrubbing action without scratching sensitive bore surfaces. The brush measures 3.5 inches in diameter with an overall length of 7.25 inches and a brush length of 5 inches. A 1/4-inch NPSM male connection at the stem allows it to attach to standard extension handles or drill adapters, making it practical for both hand-operated and power-assisted cleaning tasks. HVAC technicians, plumbers, and facility maintenance professionals reach for this brush when cleaning heat exchanger tubes, condensate drain lines, or similar cylindrical surfaces.

This tube brush suits residential and light commercial maintenance applications where a nylon bristle profile is preferred over wire to avoid damaging tube walls or coatings. Typical use cases include removing scale, debris, and buildup from tubes, drain lines, or bore openings during routine servicing or pre-season inspection. The 1/4-inch NPSM male stem threads onto compatible extension rods, allowing the brush to reach into confined or deep passages without overextending the technician.

Key Features

• 3.5-inch brush diameter provides thorough contact with standard tube and pipe interiors
• Nylon bristles resist corrosion and are safe for use on coated or sensitive tube surfaces
• 5-inch brush length covers extended bore sections in a single pass
• 1/4-inch NPSM male connection is compatible with standard extension handles and drill chucks
• Lightweight at 0.38 pounds for easy single-hand operation
• Spiral wound stem construction maintains bristle spacing and brush shape under repeated use

Compatibility

Designed for use with standard 1/4-inch NPSM female extension handles and adapters commonly used in tube and pipe cleaning applications.

Installation Notes

This brush is installed by threading the 1/4-inch NPSM male stem onto a compatible extension handle or securing it into a drill adapter. Before use in any pressurized or energized system, shut off power, isolate the system, and verify the line is depressurized and drained. A licensed HVAC technician or plumber should perform any cleaning work that involves opening sealed system components. Do not force the brush through passages smaller than the stated brush diameter, as this may damage bristles or restrict removal.