Schaefer Brush 43873 Spiral Tube Brush 4.5 in Stainless Steel

Product Description

The SCHAEFER BRUSH 43873 is a double stem spiral tube brush designed for cleaning the interior of tubes, pipes, and cylindrical bores. The brush features a 4.5-inch diameter cleaning head and a 7.25-inch overall length, with stainless steel bristles mounted on a stainless steel stem. The 1/4-inch NPSM male connection allows the brush to attach to extension rods or drill chucks for powered or manual operation. It is suited for HVAC service technicians, plumbers, and industrial maintenance personnel who need reliable mechanical cleaning in corrosive or high-residue environments.

This tube brush is well suited for cleaning heat exchanger tubes, condenser tubes, evaporator coils, and similar cylindrical passages encountered in commercial and residential HVAC systems. It also serves in plumbing applications where pipe bore cleaning is required prior to fitting installation or leak testing. The stainless steel construction makes it appropriate for use in wet, chemically active, or high-temperature service conditions where carbon steel bristles would corrode or degrade prematurely.

Key Features

• 4.5-inch brush diameter provides firm contact across the tube bore for thorough debris removal
• Stainless steel bristles resist corrosion in wet and chemically active service environments
• Stainless steel double spiral stem construction maintains bristle alignment under repeated use
• 1/4-inch NPSM male connection is compatible with standard extension rods and drill adapters
• Compact 7.25-inch overall length suits confined-space tube cleaning applications

Compatibility

Designed as a direct-fit tube brush for use in tube and pipe bore cleaning applications where a 4.5-inch diameter brush with a 1/4-inch NPSM male connection is specified.

Installation Notes

This brush is installed by HVAC technicians, plumbers, and mechanical maintenance personnel. Ensure the system is de-energized and any pressurized lines are fully depressurized and isolated before inserting the brush into a tube or pipe bore. Thread the 1/4-inch NPSM male connection securely to the chosen extension rod or adapter before use. Do not exceed the rated mechanical load of the stem when using powered drill attachments, as overloading can deform the spiral stem.