Pipe & Cable Seals for Offshore Windfarm Substations, Enclosures & Foundation
Published 12 Oct 2020

Sealing Pipes & Cables
Roxtec Pipe & Cable Seals
Offshore Windfarm Substations, Enclosures & Foundation
Roxtec provides offshore wind farms with an “all in one” solution for cable entry sealing, cable management and vibration damping. Standardise with Roxtec seals for efficient offshore windfarm cable protection design, quick roll-out and certified protection – cables are securely fixed, sealed and cable lifetime is extended.
An overview of sealing cables in LV MV HV offshore windfarm, substations, enclosure and foundation based upon industry standards and practical experience – see the Roxtec range of sealing products suited to the application below and the importance of sealing cable entry points and cable ducts.
Thorne & Derrick are distributors for Roxtec, the leading manufacturer of sealing solutions for cables and pipes, to protect electricity Transmission & Distribution assets including substations against the potential catastrophic effects water, gas and fire.
 Also: Sealing Cables In Offshore Substations – A Roxtec CPD

Sealing Cables & Pipes for Wind Turbines
Pipe & Cable Sealing Application Areas
Roxtec have 3 application areas within the Offshore Wind Industry where there are great benefits from using their solutions:
- Cabinets & Enclosures
- Offshore Substations
- Offshore Foundations
Cabinets & enclosures
Roxtec multi-cable entry seals are ideal for control cabinets, junction boxes and other electrical and instrumentation enclosures. By using our seals, you can handle high cable density and reduce the size and weight of the cabinets. Save time and labour with sealing solutions prepared for last minute changes.
Why use Roxtec?
- Watertight
- Firestop
- Gas-tight
- Cable Retention
Superior Simplicity
- One cut-out for dozens of pre-terminated cables
- Flexibility for cables and pipes of different sizes
- Built-in spare capacity for future cables and pipes
- EMC solutions for bonding, grounding and electrical safety
- Customized solutions for specific requirements
Offshore substations
Roxtec A-60/A-0 fire rated and IP rated seals are ideal for all kinds of offshore applications, such as steel decks and walls, sandwich panels, roof-top entries and cabinets. Use them to secure HVDC converter stations, AC substations, transformer rooms and GIS as well as medium and low voltage areas.
Why use Roxtec?
- Watertight
- Firestop
- Area Efficiency
- EMI/EMP Protection
- Cable Retention
Superior Pipe & Cable Sealing Simplicity
- Flexibility for cables and pipes of different sizes
- Built-in spare capacity for future cables and pipes
- EMC solutions for electrical safety
- One supplier supporting from design to inspection
Offshore foundations
Roxtec cable and pipe transits are ideal for all kinds of turbine foundations. Use them for monopile foundations, jacket structures, suction bucket foundations and floating foundations.
Why use Roxtec?
- Watertight
- Vibration Damping
- Cable Retention
Superior Pipe & Cable Sealing Simplicity
- Flexibility for cables and pipes of different sizes
- Built-in spare capacity for future cables and pipes
- One supplier supporting from design to inspection

Roxtec R Transit
Further Reading
- 132kV 33kV 11kV DNO Substations – A Guide To Cable Sealing By Roxtec
- Roxtec H3 Cable Transit Seals – How To Seal Substation Cables

Roxtec | Lillgrund in Sweden is one of the largest offshore wind farms in the world generating green energy to 60,000 households with cables sealed and protected by Roxtec

Cable Transits – Sealing Cables & Pipes
Thorne & Derrick are Specialist Distributors to the UK and international Offshore Wind & Renewable industry to provide safe and reliable LV HV Electrical Cable & Power Distribution Systems up to 66kV – we are highly customer responsive and absolutely committed to providing a world-class service.
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HVÂ

See how T&D support, supply and service the Renewable Energy industry.

MV HV Cables 11kV 33kV 66kV | Cable Joints, Terminations & Connections