Roxtec Sealing Cables & Pipes In The Rail Industry

By Chris Dodds on 9th February, 2016

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Roxtec Sealing Cables & Pipes In The Rail Industry

Sealing Cables.

Reliable Cable & Pipe Sealing In The Rail Industry.

The ingress, migration, spread and attack of water, gas, fire, smoke, rodents, dust and EMI are the main risks associated with cable and pipe service penetrations on rail infrastructure.

Roxtec, the leading manufacturer of cable and pipe sealing solutions, protects vulnerable assets and ensures their reliable operation with safe and certified cable sealing systems.

Roxtec have recently designed and manufactured heavy-duty cable sealing solutions for Network Rail’s London Bridge railway station substation.

The bespoke cable and pipe transit frames which, at 218kg each, are the heaviest frames Roxtec has ever produced for the UK, are specifically designed for the flagship rail project.

Together with the Roxtec cable and pipe sealing modules and compression units they will protect against the threat of water ingress, condensation, fire and rodents.

Pictured: Graham O'Hare, Roxtec UK Managing Director

Graham O'Hare, Roxtec UK Managing Director

Managing Director of Roxtec, Graham O’Hare said the rail substation project, part of the multi-billion pound Thameslink Programme, required all of Roxtec’s engineering experience and expertise.

"Network Rail commissioned us to seal cables entering the substation from ground level inside a trackside riser above a switch room,” he said.

"We had to ensure that the cables feeding from the switchgear substation to the tracks were properly sealed and protected against multiple hazards."

Pictured: Roxtec Custom Cable Seals

Roxtec Custom Cable Seals

"To achieve this we designed and manufactured customised transit frames to seal the high voltage cables. The cable transit frames, which had to both protect the 53mm diameter cables and provide ultra-rigidity for the tight radius bend, were then cast into poured concrete because of their weight. As a risk of condensation was also identified, each frame was sealed at both ends.

"The transit frames measured 1.5m in depth and were designed with puddle flanges and a special arch shaped flange to match the curvature of the existing substation roof.”

Roxtec’s cable seal solutions provide water ingress protection which exceeds the highest IP rating, a one-hour fire rating and vibration and pull-out resistance.

Crucially for the rail industry, they also have a long-life expectancy of up to 30 years.

He added: "Our engineers were heavily involved during the design phase of the project and provided full technical support throughout. We also provided installation training ahead of the work and then sent a Roxtec representative to oversee the weekend installation.

“As ever with Roxtec cable sealing solutions, we ensured that space was created to enable future cable upgrades can be made with the minimum of disruption.”

CPDMr O’Hare said Roxtec was able to win the Network Rail contract after showcasing its high-level of expertise during a rail industry Continuing Professional Development (CPD) seminar.


Earn CPD Points With Roxtec Rail Industry Seminar

Who should attend?

Both design, build and installation engineers of railway infrastructure/equipment and rail network operators, design consultancies and contractors.

Contact Roxtec to organise.


The Network Rail project awarded to Roxtec cements their position as the market-leading rail cable and pipe seal manufacturer following earlier wins this year with London Underground.

Read : Roxtec Halogen Free Cable Seals Used On Cables During The Modernisation Of London Underground

Roxtec Cable Transits & Seals - LUL Products



  • Further Reading :

Video : Roxtec UG - Sealing Substation Cables Underground Against Constant Water Pressure

Roxtec Transit Designer Version 3.0 - Cabinet Entry Design



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Discussion subjects include cable installations, cable jointing, electrical substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

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Category:  Cable Transits & Duct Sealing

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