Trusted protection in the world’s harshest environments

Cable and pipe penetration sealing specialists

Specialist innovative solutions

At CSD Sealing Systems, we specialise in innovative, certified solutions that protect vital infrastructure from multiple threats – ensuring safety, integrity and performance for decades. From aircraft carriers to data centres, we’ve protected over one million transits across the UK and beyond.

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Trusted for over 30 years

Tailored protection for every environment

With 30+ years of technical expertise and a track record in over one million seals worldwide, we understand the unique challenges of each sector and design our solutions to meet the highest performance and compliance standards.

HMS QEC docked behind man standing with PPE

When the stakes are high, CSD is the name industries trust to get it right – first time, every time.

Why choose CSD

With over three decades of experience, our team combines deep technical knowledge with industry insight to solve complex challenges on land and at sea. We’ve supported thousands of projects – from major naval vessels and nuclear facilities to national utility networks and renewable power infrastructure.

About CSD

30+ years of proven innovation

We are trusted to safeguard valuable assets with our world leading solutions, expert skills and innovative thinking across high-risk sites in the world’s harshest environments.

Installed across 3,000+ naval projects

CSD products have protected the entire UK naval fleet, including cable and pipe transits across QEC Class Aircraft Carriers, Type 45 destroyers, Type 26 Frigates and more.

1M+ seals installed across the UK

Premium protection for cable and pipe transits, building entry points and cable ducts, across marine, offshore and built environment assets.

Certified to the highest UK and global standards

We are a globally trusted partner, offering certified sealing solutions that will protect your assets and people for years to come. We’ll help you choose the right solution for your needs.

Case Studies

Every project brings unique challenges and CSD works closely with clients to engineer the right solution. Discover how our sealing systems have been applied across global infrastructure projects to improve safety, performance and compliance.

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Water and gastight sealing at a timber manufacturing substation cable chamber

At a large timber frame manufacturing facility, a newly constructed cable chamber was showing early signs of vulnerability. Gaps between ducting and core drilled concrete created clear leak paths exposing the substation to the risk of water ingress a…

Water and gastight sealing at a pumping station

At one of the UK's water pumping stations, persistent water ingress was beginning to pose a real risk to day-to-day operations. While the issue was largely hidden from view, the impact could have been very visible for customers. Any damage to electri…

Electrical substation with hill in background

Electricity distribution – water and gastight sealing at a 400kV substation

Substations plays a vital role in transmitting renewable energy from offshore windfarms to the national grid. Protecting the substation’s buildings from water ingress is essential to maintaining a stable electricity supply for homes, businesses and…

“Over three decades, we’ve seen every kind of site condition and challenge. Our clients come to us because they know we’ll deliver the right solution every time. As industries evolve, so do we, by developing new products, expanding into new sectors and continuing to protect the infrastructure that keeps the world running.”

David Ripley

CSD Sealing Systems

Trusted protection in the world’s harshest environments

Specialist innovative solutions

Trusted for over 30 years

Tailored protection for every environment

Marine

Power

Built Environment

Manufacturing

Offshore Oil and Gas

Installation

Training

Product Supply & Logistics

Inspection and surveys