Schaefer Brush 43503 Tube Brush 5/16 in Stainless Steel

Product Description

The SCHAEFER BRUSH 43503 is a double stem, single spiral tube brush designed for cleaning small-diameter tubes, ports, and bores in HVAC, plumbing, and mechanical service applications. The brush measures 0.3125 inches in diameter and 4.5 inches in overall length, with a 3-inch brush and scraper section. Stainless steel bristles provide corrosion resistance and durability against scale, debris, and residue buildup inside metal tubing and fittings. The 8-32 female threaded connection allows attachment to compatible extension rods or handles for controlled cleaning passes.

This tube brush suits technicians cleaning condenser tubes, heat exchanger passages, valve ports, and small-bore piping during routine maintenance or repair. The double stem construction keeps the spiral bristle pattern centered in the bore for consistent contact along the tube wall. Stainless steel construction makes it appropriate for use in wet or chemically active environments common in HVAC coil service, refrigeration, and plumbing work.

Key Features

• Double stem, single spiral design centers bristles in the bore for even cleaning coverage
• Stainless steel bristles resist corrosion and maintain stiffness in wet service environments
• 3-inch brush length provides adequate reach for typical tube and port cleaning tasks
• 8-32 female threaded connection is compatible with standard extension rod systems
• Compact 4.5-inch overall length allows use in tight access areas

Compatibility

Designed for use in 5/16-inch diameter tubes, bores, and ports as an OEM-style cleaning tool for HVAC, refrigeration, and plumbing maintenance applications.

Installation Notes

Tube brushes of this type are typically used by HVAC technicians, plumbers, and mechanical service professionals during system cleaning and maintenance. Shut off and de-energize the system before accessing internal passages. Thread the brush securely onto an extension rod before use to prevent it from becoming lodged inside the tube. Follow applicable service procedures for the system being cleaned.