Schaefer Brush 43751 Spiral Tube Brush 2.5 in Nylon

Product Description

The SCHAEFER BRUSH 43751 is a single stem spiral tube brush designed for cleaning cylindrical passages, tubes, and ports where a flexible, abrasion-resistant bristle is needed. It features nylon bristles that resist chemical attack and provide consistent scrubbing action without scratching metal surfaces. The brush measures 2.5 inches in diameter with an overall length of 7.25 inches and a brush or scraper length of 5 inches. A 1/4 inch NPSM male connection allows secure attachment to extension rods or drill chucks. It is suited for HVAC, plumbing, and general maintenance technicians who need reliable tube cleaning in recurring service work.

This brush is used in applications requiring internal cleaning of tubes, condenser tubes, drain lines, heat exchanger passages, and similar cylindrical openings. The nylon bristle construction makes it appropriate for use on metal, plastic, or coated tube interiors where wire bristles would cause damage. It fits standard drill chucks or threaded extension rods via the 1/4 inch NPSM male shank, making it a practical choice for both bench work and field service.

Key Features

• 2.5 inch brush diameter for cleaning standard tube and port sizes
• Nylon bristles resist corrosion and chemical exposure
• 5 inch brush length provides effective scrubbing coverage
• 1/4 inch NPSM male connection for use with extension rods or drill chucks
• 7.25 inch overall length allows reach into deeper passages
• Lightweight at 0.32 pounds for easy one-handed use

Compatibility

Designed as an OEM-style replacement or maintenance consumable for use with standard 1/4 inch NPSM-threaded extension handles and drill chucks in tube and condenser cleaning applications.

Installation Notes

This brush is installed and used by HVAC technicians, plumbers, and maintenance professionals. Before use, ensure the equipment being cleaned is powered down, depressurized, and isolated from service. Attach the 1/4 inch NPSM male shank securely to an extension rod or drill chuck before inserting into the tube. Do not exceed the rated diameter range of the tube opening, as forcing an oversized brush can damage bristles or tube walls.