Wuko 1003A Sheet Metal Seam Closer

The WUKO 1003A Sheet Metal Seam Closer is a professional electric-powered tool designed for closing Z-form seams on straight and curved sheet metal workpieces. Ideal for HVAC duct fabrication, segmented elbows, and custom sheet metal applications, this compact machine provides fast, consistent seam closure without the repetitive effort required by manual forming methods.

The WUKO 1003A is designed for standard seam heights from 5–12 mm (approximately 3/16"–1/2") and can be used on curved workpieces with radii as small as approximately 80 mm (3"). Its powered hammering mechanism progressively closes the prepared Z-form seam, providing reliable results on compatible galvanized steel and stainless steel materials.

Powered by a 500W electric motor with working speeds of approximately 13–19 ft/min, the WUKO 1003A combines robust construction with a lightweight 8.3 lb design. The tool is suitable for both workshop and jobsite applications. Optional special jaws are available for closing smaller seams measuring 3–6 mm (approximately 1/8"–1/4").

Features & Benefits

• Z-Form Seam Closure: Designed for closing prepared Z-form seams on sheet metal workpieces.
• Straight & Curved Applications: Suitable for straight sections and rounded workpieces, including segmented elbows and ductwork components.
• 3" Minimum Curving Radius: Accommodates curved workpieces with radii down to approximately 80 mm.
• Adjustable for Different Seam Heights: Standard forming jaws accommodate seam heights from 5–12 mm (approximately 3/16"–1/2").
• Powered Hammering Action: Progressively closes prepared seams for consistent, uniform results.
• High Working Speed: Operates at approximately 13–19 ft/min for efficient sheet metal fabrication.
• Lightweight Construction: Weighs just 8.3 lbs for convenient handling and positioning.
• Robust Design: Durable construction designed for professional metalworking applications.
• 500W Electric Motor: Provides reliable powered operation for closing compatible sheet metal seams.
• Versatile Material Compatibility: Suitable for galvanized steel and stainless steel within the manufacturer's rated material capacities.
• Optional Special Jaws: Available for smaller seam heights from 3–6 mm (approximately 1/8"–1/4").
• Workshop & Jobsite Use: Compact, portable design supports fabrication in the shop or directly at the installation site.
• Carrying Case Included: Protective case provides convenient transportation and storage.

Technical Specifications

• Tool Type: Electric sheet metal seam closer
• Application: Closing Z-form seams
• Standard Seam Height: 5–12 mm (approximately 3/16"–1/2")
• Optional Special Jaw Seam Height: 3–6 mm (approximately 1/8"–1/4")
• Minimum Curving Radius: Approximately 80 mm (3")
• Maximum Galvanized Steel Thickness: 1.00 mm (0.039", approximately 20 ga)
• Maximum Stainless Steel Thickness: 0.60 mm (0.024", approximately 24 ga)
• Working Speed: 4–6 m/min (13–19 ft/min)
• Power Rating: 500W
• Operating Voltage: 120V
• Tool Weight: 3.75 kg (8.3 lbs)
• Operation: Electric-powered
• Operating Environment: Workshop and jobsite
• Included Storage: Carrying case

What's Included

• WUKO 1003A Seam Closer: Electric-powered sheet metal tool for closing Z-form seams on straight and curved workpieces.
• Standard Forming Jaws: Designed for seam heights from 5–12 mm (approximately 3/16"–1/2").
• Carrying Case: Protective case for convenient transportation and storage.

Optional Accessory

• Special Forming Jaws: Optional replacement jaws for closing smaller Z-form seams measuring 3–6 mm (approximately 1/8"–1/4"). Sold separately. Maximum material thickness with these jaws is 0.75 mm for material rated at 400 N/mm² tensile strength.