Schaefer Brush 43836 Spiral Tube Brush 1-1/4 in Stainless Steel

Product Description

The SCHAEFER BRUSH 43836 is a double stem spiral tube brush designed for cleaning the interior of tubes, pipes, and fittings. The spiral construction drives the stainless steel bristles firmly against bore walls, removing scale, debris, and buildup without collapsing under pressure. At 7.25 inches overall length with a 4.5-inch brush section and a 1.25-inch diameter, this brush is sized for standard small-bore tube and pipe applications. The 0.25-inch NPSM male connection allows it to mount directly to a rod, handle, or drill chuck. Stainless steel construction throughout resists corrosion, making it suitable for wet, chemical, or high-temperature service environments.

This brush is used in HVAC, plumbing, and industrial maintenance work where bore cleanliness is critical. Common applications include cleaning condenser tubes, evaporator coils, copper refrigerant lines, drain lines, and small-diameter pipe fittings before soldering or inspection. The stainless steel bristle fill holds up in caustic or high-moisture environments where carbon steel brushes corrode or shed. Service technicians and pipefitters reach for this brush during scheduled maintenance, pre-solder prep, and inspection cycles on residential and light commercial systems.

Key Features

• Double stem spiral design maintains bristle contact with tube bore walls throughout the full stroke
• Stainless steel bristles resist corrosion in wet, chemical, and high-temperature environments
• 1.25-inch brush diameter suited for standard small-bore tube and pipe cleaning
• 4.5-inch brush length provides extended reach inside tubes and fittings
• 0.25-inch NPSM male connection mounts to standard rods, handles, or drill chucks
• Lightweight at 0.38 pounds for easy single-hand operation

Compatibility

Designed as an OEM-style replacement and standard-use tube brush for 1.25-inch inside-diameter tubes, pipes, and fittings in HVAC, plumbing, and industrial maintenance applications.

Installation Notes

This brush is installed and used by HVAC technicians, plumbers, and maintenance professionals. Before brushing any tube or fitting connected to a live system, shut off all fluid flow and depressurize the line. The 0.25-inch NPSM male thread should be hand-tightened onto the extension rod or handle before use to avoid cross-threading. Do not force the brush through bends tighter than the bristle section will naturally follow, as this can deform the stem or loosen the fill.