Schaefer Brush 43848 Spiral Tube Brush 2.25in Stainless Steel

Product Description

The SCHAEFER BRUSH 43848 is a double stem spiral tube brush designed for cleaning the interior walls of tubes, pipes, and cylindrical passages. The spiral stem construction distributes bristle contact evenly around the tube bore, making it effective for removing scale, debris, and buildup in confined passages. With a 2.25-inch brush diameter and a 4.5-inch brush length, the 43848 covers a solid working area in a single pass. The 0.25-inch male NPSM threaded connection allows it to attach to standard extension handles or drill adapters. Stainless steel bristles and a stainless steel brush body resist corrosion, making this brush well suited to wet or chemically active service environments.

This brush is used by HVAC technicians, plumbers, and industrial maintenance trades for tube and conduit cleaning applications. Typical uses include cleaning heat exchanger tubes, boiler flues, condenser tubes, drain lines, and similar cylindrical passages where surface contact and mechanical scrubbing action are required. The double stem spiral design is preferred when a rigid, stable bristle pattern is needed to maintain consistent bore contact during brushing strokes or rotary-driven operation.

Key Features

• Double stem spiral construction for even bristle distribution and stable bore contact
• 2.25-inch brush diameter sized for standard tube and pipe cleaning applications
• 4.5-inch brush length provides extended surface coverage per pass
• Stainless steel bristles resist corrosion in wet and chemically active environments
• 0.25-inch male NPSM threaded connection compatible with standard extension handles and drill adapters
• Lightweight at 0.46 pounds for easy one-handed maneuvering

Compatibility

Designed as an OEM-style replacement or standard service brush for tube and pipe cleaning tasks requiring a 2.25-inch bore diameter brush with a 0.25-inch male NPSM threaded shank connection.

Installation Notes

This brush is typically used by HVAC technicians and plumbers during maintenance or cleaning service calls. Before inserting the brush into any tube or pipe, isolate and de-energize the associated system and relieve any pressure in the line. The NPSM threaded shank should be hand-tightened onto the extension handle or drill chuck before use. Do not force the brush into a passage smaller than the rated brush diameter, as this can deform the bristles or damage the stem.