LOKRING Tube ConnectorsLOKRING Single Ring

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LOKRING SINGLE RING is a custom designed product for each application. Its design takes into account the tube materials that are being joined, the wall thickness and the diameters of the tubes. It is both an approved and certified system for the joining of metallic tubes.



  • Handy assembly tools.
  • Considerable tolerances in dimensions are permitted.
  • Clean joint both inside and outside.
  • No welding, brazing or screw cutting.
  • Ecologically and health wise harmless system.
  • Permanent hermetically metal-to-metal sealing.
  • Enables tubes consisting of different tube materials to be easily connected.
  • High reliability.
  • No special preparation of the tubes required.
  • Easy and fast assembling in 10 seconds.

Technical Data

    • Operating pressure:* PN (nominal pressure) = 25 bar (360 psi) up to 50 bar (725 psi)
    • Test pressure: PP (4 x PN) = 100 bar (1450 psi) up to 200 bar (2900 psi)
    • Temperature range: -50°C up to +150°C (-58 °F up to 302 °F)
    • Tube wall thickness: 0.3 mm up to 1.5 mm**
    *Depending on tube materials. / **Further dimensions on special request.

      Application

      • OEM | Production

      Material Combinations

      >>>Al-Al
      >>>Al-Cu
      >>>Al-St
      >>>Cu-Cu
      >>>Cu-St
      >>>St-St

      Equipment

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      LOKTOOL HA

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      An elongated, silver-coloured metal object with a complex, irregular shape. The surface is shiny and features several recesses, indentations and small mechanical details. The object lies on a light grey background.

      LOKTOOL HAT

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      A metallic component in silver colour with a complex shape. It consists of a cylindrical section and several smaller, interconnected elements. The surface is shiny, and the object rests on a light grey background.

      LOKTOOL HFT

      The hydraulic flaring tool is designed for the flaring of aluminium tubes for the production of LOKRING…

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      Zwei kleine Flaschen mit blauen Etiketten und weißen Aufdrucken stehen nebeneinander auf einem hellgrauen, einfarbigen Hintergrund. Jede Flasche hat einen transparenten, länglichen Verschluss.

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      LOKPREP was developed especially for LOKRING assembly and must always be used wherever LOKRINGs are to be…

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