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Standard Block

Each block consists of two halves which together creates a square shaped 60 mm long sealing insert. Standard insert blocks are divided up in seven sizes, 15, 20, 30, 40, 60, 90 and 120 mm in square.

  • They are designed to seal cables and pipes with diameters from 3.5 – 110 mm (0.14-4.33”).
  • Other dimensions can be supplied to order.

Technical Specifications

It is important that the insert block is the right size, with respect to the cable, to ensure a proper seal. Measure the cable diameters carefully and select insert blocks according to the table.
Blocks are referred to by their width (A) and hole diameter (B). Thus a block with a width of 15 mm (0.59”) and a hole diameter of 4 mm (00.16”) is referred to as 15/4.

Cornerblocks for RGSC transit (R20)



Standard Block Tables

Standard Block Table
Standard Block Weights


GR/DWC-34/01/SEP 2007 & RDSO/SPN/204/2011

Train EN-45545
HL 1, HL 2, HL 3


Trade name: 
MCT Brattberg Insert Block


Lycron data

Read Lycron data sheet:
Data sheet Lycron

Lycron is halogen free and flame retardant.


For all approvals, please also see Certificates 


  • Insert Blocks 15 module, 12x10/0 and 24x5/0 is not approved with RGP system in Ex applications.

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.

RGS frame, horizontal installation
RGS frame, vertical installation

Download pdf instructions 

Other insert blocks


Newly developed Insert Block that provides greater flexibility, simple and safe installation.

See more


Eleven blocks and 66 dimensions.

See more


The U-Block is used to convert the external dimensions of Insert Blocks, AddBlocks and Spare Blocks to the next modular size.

See more


The unused space in the frame is filled with solid spare blocks. Using the spare blocks allows the option of fitting new cable in the future.

See more


Insert blocks for Waveguides

See more