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RGS cable and pipe transit are used in high-risk maritime and offshore environments to minimize danger by preventing the spread of fire, water, gas chemicals and other hazards substances.

The system consists of a frame, rubber blocks and a compression unit.
The frame is welded to a marine structure and packed with rubber blocks suited for each cable and pipe dimension. The compression unit is inserted to compress the rubber blocks against cables and pipes to establish a tight seal. 


A60 H120
A60 H120
6 Bar
6 Bar
IP66/68 Nema250
IP66/68 Nema250
RGS multi cable transit


RGS is MCT Brattbergs standard transit for marine applications.
It has a standard internal width of 120 mm (4.72”) and is 60 mm (2.36”) deep.

Standard frames come in eight sizes: 1, 2, 3, 4, 5, 6, 7, and 8. 
The internal width can be 60.5 ± 1 (Size 1,3,5,7) or 120.5 ± 1 (2,4,6,8).

Note that there can be limitations in type-approvals & certificates, making certain sizes inapplicable.

They may be used in both vertical and/or horizontal multiple frames. The RGS is welded into an accurately pre-cut hole in the deck or bulkhead. As with all our transits, RGS is produced in steel, stainless steel, or aluminium. For installations where cables are already in place, specify RGSO, which has a removable end. 

For further technical information see tables in our Online Catalogue:


Maritime resistance to fire: 
Class A0, A60, H0, H60, H120 - IMO FTP Code 2010
(For more info see Certificates)

6 Bar water pressure load for 60 minutes - DNVGL-CP-0165 

4 Bar air pressure load for 30 minutes - DNVGL-CP-0165  

Enclosure degree of protection Nema 250:
3R; 4X; 12 - Nema 250-1st

Enclosure degree of protection IP: 
IP65; IP66; IP67; IP68 2 meters 60 min - IEC 60529

Resistance to jet fire:
RGSbtb- J120 & JF 
RGS - J60 & JF 
(Contact MCT Brattberg for application details)



Trade name: 
MCT Brattberg RGS multi cable/pipe transit system


Working temperature:
 -65 to +70 degrees C

Lycron data

Read Lycron data sheet:
Data sheet Lycron

Lycron is halogen free and flame retardant.


For all approvals, please also see Certificates 

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.

MCT Brattberg system, horizontal installation
MCT Brattberg system, vertical installation

Download pdf instructions 

For more information visit Documents & instructions

Multiple frames


Horizontal multiple frames are described by listing the frame type and size x the desired number of horizontal openings.
Designation (starting at bottom):
Frame type 6x4


Vertical multiple frames are described by listing the bottom frame type and size + the next frame type and size.
Designation (starting at bottom):
(frame type) 6+6+4 and (frame type) 6+4+2


List the entire vertical frames x the desired number of horizontal repetitions.
Designation (starting at bottom):
(frame type) 6+4+2x4

NOTE: All multiple frame designations must be preceded by the frame type.

NOTE: All multiple frame designations must be preceded by the frame type.

Insert Blocks


Standard Block

Standard Block for a fast and safe installation.

Read more


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

Read more


Eleven blocks and 66 dimensions.

Read more


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

Read more
Spare Block


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.

Read more


Insert blocks for Waveguides

Read more



To be placed between each row of blocks.

Read more

STG Endpacking

Installed between compression plate and the top of the frame, completing the seal.

Read more

PTG Presswedge

The Presswedge compresses the system and completing the seal.

Read more


MCT Brattberg Lubricant for easier and safer installation.

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E-PTG Presswedge

The Presswedge with EMC and G&B capabilites compresses the system and completing the seal.

Read more

E-STG Endpacking

Installed between compression plate and the top of the frame, completing the seal.

Read more


Real examples of installations on different sites:

RGSF Galloper
RGSF Galloper
RGSF Galloper