Wuko 1004 Sheet Metal Pittsburgh Seam Closer

The WUKO 1004 Sheet Metal Pittsburgh Seam Closer is a professional 120V electric-powered tool designed for closing Pittsburgh lock seams on straight and curved sheet metal workpieces. Built for HVAC duct fabrication, sheet metal shops, and field installation, this compact machine provides efficient, consistent seam closure on ductwork, segmented elbows, and custom fabricated metal components.

The WUKO 1004 is available for three Pittsburgh seam heights: 5/16", 3/8", and 1/2". Its guided forming mechanism helps maintain proper alignment during operation, allowing the tool to close prepared Pittsburgh seams along straight sections, outside radii, and inside radii as tight as approximately 150 mm (6"). Each configuration is supplied for the selected seam height, allowing operators to choose the appropriate tool for their fabrication requirements.

Powered by a 500W, 120V electric motor, the WUKO 1004 operates at working speeds of approximately 13–19 ft/min. Weighing just 8.5 lbs, it combines robust construction with convenient portability for workshop and jobsite use. Its powered forming mechanism helps reduce repetitive manual seam-closing work while maintaining consistent finished results.

Features & Benefits

• Pittsburgh Lock Seam Closure: Designed specifically for closing prepared Pittsburgh seams on sheet metal ductwork and fabricated components.
• Three Seam Height Options: Available for 5/16", 3/8", or 1/2" Pittsburgh seam heights.
• Straight & Curved Applications: Suitable for straight duct sections, segmented elbows, and other rounded sheet metal workpieces.
• Inner & Outer Radius Seaming: Closes Pittsburgh seams along both inside and outside curves.
• 6" Minimum Inner Radius: Accommodates inside curves with radii down to approximately 150 mm.
• Guided Forming Mechanism: Helps maintain consistent positioning and alignment for uniform seam closure.
• High Working Speed: Operates at approximately 13–19 ft/min for efficient fabrication.
• 500W Electric Motor: Provides reliable powered operation for closing Pittsburgh lock seams.
• 120V Operation: Configured for use with a compatible 120V electrical supply.
• Lightweight Construction: Weighs approximately 8.5 lbs for convenient handling and positioning.
• Robust Design: Durable construction suitable for professional metalworking applications.
• Reduced Manual Effort: Powered seam closing helps minimize repetitive hand-forming operations.
• Galvanized Steel Compatibility: Accommodates galvanized steel up to 1.20 mm (19 ga).
• Optional Forming Jaws: Additional jaws are available for other seam heights.
• Workshop & Jobsite Use: Compact design supports fabrication in the shop or at the installation site.

Technical Specifications

• Tool Type: Electric Pittsburgh seam closer
• Application: Closing Pittsburgh lock seams
• Available Seam Heights: 5/16", 3/8", or 1/2"
• Workpiece Compatibility: Straight and curved sheet metal sections
• Minimum Inner Curving Radius: Approximately 150 mm (6")
• Outer Radius Seaming: Yes
• Maximum Galvanized Steel Thickness: 1.20 mm (approximately 0.047", 19 ga)
• Working Speed: 4–6 m/min (13–19 ft/min)
• Power Rating: 500W
• Operating Voltage: 120V Only
• Tool Weight: 3.85 kg (8.5 lbs)
• Seam Height Configuration: Selected when ordering
• Additional Forming Jaws: Available for other seam heights
• Operation: Electric-powered
• Operating Environment: Workshop and jobsite

Available Seam Heights

The WUKO 1004 Pittsburgh Seam Closer is available exclusively in 120V with three seam height configurations. Select the required seam height when ordering to ensure the machine is supplied with the appropriate forming jaws.

• 5/16" Seam: Configured for closing 5/16" Pittsburgh lock seams.
• 3/8" Seam: Configured for closing 3/8" Pittsburgh lock seams.
• 1/2" Seam: Configured for closing 1/2" Pittsburgh lock seams.

What's Included

• WUKO 1004 Pittsburgh Seam Closer: 120V electric-powered tool designed for closing Pittsburgh lock seams on straight and curved workpieces.
• Selected Forming Jaws: Forming jaw configuration for the 5/16", 3/8", or 1/2" seam height selected when ordering.