Schaefer Brush 43648 Tube Brush 2-1/4 in Brass Bristles

Product Description

The SCHAEFER BRUSH 43648 is a double stem, single spiral tube brush designed for cleaning the interior walls of tubes, pipes, and cylinders. It features a 2.25-inch brush diameter and an 8-inch overall length, with a 4.5-inch brush scraper length that provides effective contact across the working zone. The bristles and brush body are both constructed from brass, making it well suited for applications where ferrous contact or sparking must be avoided. A 0.25-inch NPSM male threaded connection allows it to be mounted on standard extension handles or drive rods. Maintenance technicians and trade professionals use this brush for tube cleaning tasks in HVAC, plumbing, and industrial service work.

This tube brush is appropriate for cleaning condenser tubes, heat exchanger tubes, copper pipe interiors, and similar cylindrical passages in residential and commercial applications. The brass construction makes it compatible with soft metals and sensitive tubing materials where steel bristles could cause scoring or contamination. The NPSM male threaded connection is a common standard, allowing the brush to attach to widely available extension rods and drill adapters for powered or manual operation.

Key Features

• Double stem, single spiral construction for consistent radial contact inside tubes
• 2.25-inch brush diameter for 2-1/4 inch tube interior cleaning
• 4.5-inch brush scraper length for extended cleaning reach within the tube
• Brass bristles and brush body resist sparking and resist corrosion on soft metal surfaces
• 0.25-inch NPSM male threaded connection fits standard extension handles and drill adapters

Compatibility

Designed as an OEM-style replacement tube brush for use with standard 0.25-inch NPSM-threaded extension handles and rods in tube and pipe cleaning applications.

Installation Notes

This brush is installed by trade technicians performing tube cleaning and maintenance on heat exchangers, condensers, and similar equipment. Always shut down and isolate the system before inserting any brush into tubing or heat exchanger passages. Secure the brush firmly to the extension handle or drill adapter before use to prevent detachment inside the tube. Follow applicable safety procedures when working with rotating tools or powered cleaning equipment.