Long-lasting automatic re-tensioning effect

  • Material: W3, W4
  • Clamping Ranges: 10 mm - 110 mm
  • Bandwidth: 9, 12 mm

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For this version of the TORRO® the standard hose clamp is equipped with a spring insert on the inside of the clamp band. When tightening the screw the spring is loaded and stores sufficient clamping force to ensure a long-lasting automatic re-tensioning effect. Thus the radial clamping force achieved will be sufficient even under extremely low temperatures. Therefore, the TORRO® is an optimal solution for applications under extreme temperature changes (e.g., charged air) or for the retention of hoses with a tendency of ‘creeping’ (hose relaxation).

What you will love!

  • Automatic re-tensioning effect in the event of hose relaxation
  • Increased sealing reliability across a wide temperature range

Did you know?

NORMA is the largest European manufacturer of worm drive clamps.

Where can you use it?



  • Joining cooling water lines
  • Depressurized and pressurized fuel lines and ventilation systems
  • Oil lines
  • Joining lines in sanitary applications
  • Joining lines in machine building applications
  • Lines in the household appliance industry

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