Seam Locker TruTool F 140

TruTool F 140 works on a continuous roll forming principle, thus ensuring air-tight closure without hammering. This permits processing of straight and curved sheets up to 1.4 mm. The surface structure is not damaged. The seam closer functions with an automatic infeed, which means that you can proceed without the use of force. Pre-settings can be made for sheet thickness without the use of tools. TruTool F 140 can also be used for stainless steel and is very well-suited for processing large radii.

Technical Data

TruTool F 140 (230V)


Max. material thickness


  • Steel 400 / mm²

1.4 mm 

  • Steel 600 / mm²

0.6 mm 

Edge length (H)

10 mm - 15 mm 

Flange height (B)

13 mm 

Clearance (C)

2.5 mm 

Working speed

6 m/min - 10 m/min 

Smallest inner radius (preformed)

300 mm 

Smallest outer radius

500 mm 

Rated input power

500 W 

Weight (electrical version: without cable, cordless version: with battery)

4.2 kg 

High seam quality in curved and straight sheets, even in stainless steel

  • Closes Pittsburgh seams on straight and radius duct up to 1.4 mm sheet thickness
  • High performance on stainless steel applications
  • No refitting when processing formed or folded pieces
  • Electronic speed controller for optimal working speed
  • Machine available as electric-version


  • Heating and ventilation works
  • Chimney works
  • House-front construction
  • Industrial ventilators

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