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Standard Trefoil block

For a fast and safe installation
At sea On land

Product is made of one block which opens up in the top to all three holes.

  • Seals three holes with diameters from 28 - 40 mm.
  • Safe and fast installation

Correct and safe installations

To achieve the highest standard of safety, a cable or pipe transit must be installed correctly. As there are many different types of frame – which may be either welded, bolted or glued into position – and insert block, it is essential that installers known when to use the most appropriate installation method.

For more information, please view following instructions, videos or download manuals as PDFs.

It is important that the block is the right size, with respect to the cable, to ensure a proper seal.
Measure the cable diameters carefully and select blocks according to the table.

Standard Trefoil block 28
Standard Trefoil block 30
Standard Trefoil block 32
Standard Trefoil block 34
Standard Trefoil block 36
Standard Trefoil block 38
Standard Trefoil block 40
Trefoil block Drawing
Trefoil block Table

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