Insert blocks

MCT Brattberg’s insert blocks are manufactured from Lycron, a synthetic polymer that was developed to withstand fire, explosions, temperature variation, ageing, radiation and rodents. The blocks are injection moulded giving precision components to a high degree of accuracy. Standard blocks are available for cable diameters from 3,5 – 110 mm. Other dimensions can be supplied to order. Each AddBlock can be adapted to five different cable dimensions. U-blocks are used to increase the outside dimensions of all blocks to the next module size.


Standard Blocks



Spare Blocks   

Data Insert Blocks

Trade name: MCT Brattberg AB Lycron
Material: Lycron (EPDM rubber based)
Color: Pink
Working temperature: -40 to +70 degrees C
Oxygen index: 31%
Thermal conductivity: 0.15 W/mK
Electrical insulation: > 20 kV AC/mm
Smoke index: 47.6
Hardness: 78-88 IRHD

Chemical compatibility:

Water: Excellent
Submerged in Oil: Not recommended
Ozone: Excellent
Sea water: Excellent
Methanol: Excellent
Chlorine: Good
Acid: Good
Submerged in Diesel: Not recommended
Submerged in Gasoline: Not recommended

Lycron is halogen free and flame retardant.