Our team is ready to help you specify the right solution for your site conditions and future access needs.

Re-entrable Duct Seals
Our re-enterable duct seal systems are engineered for environments where adaptability is essential. Designed to offer robust defence against water, gas, smoke, fire and rodent ingress, these seals allow easy access for upgrades, maintenance or service changes, without compromising safety or performance.
Trusted for over 30 years
Explore our Re-Enterable Sealing products
Ideal for substations, utilities, telecoms, and transport infrastructure, these solutions reduce downtime, simplify installation, and provide long-term peace of mind.
Need help choosing the right duct seal?

“CSD’s team are very focused in their approach to provide a high-quality product and service. We are looking forward to working with them in the future.”
Senior Electrical Design Engineer
Thames Water








