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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 1 million transits across the UK and beyond.
Certified protection. Built for the world’s harshest environments.
CSD Sealing Systems offers a range of advanced sealing products engineered to protect vital infrastructure from fire, water, gas, smoke and EMP. Designed for flexibility, longevity and ease of installation, our systems are trusted across sectors where safety and performance cannot be compromised.
Trusted protection in the world’s harshest environments
Fire. Water. Gas. Smoke. EMP.
Cable and pipe penetration sealing specialists
When the takes are high, CSD is the name industries trust to get it right – first time, every time.
“The service provided by CSD was excellent in all aspects. The installation crew were skilled, hard-working and resourceful and also integrated well with our own men who supported then with the external duct sealing.”
Project Manager
UK Onshore Wind Farm
Trusted by Industry for Over 30 Years
Trusted for over 30 years
What we deliver
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Related news posts
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Case Studies
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Tailored Protection for Every Environment
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Why choose CSD
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- 30+ years of proven innovation
- Installed across 3,000+ naval projects
- 1M+ seals installed in the UK alone
- Certified to the highest UK and global standards
CSD’s NOFIRNO Pipe Penetration System and SLIPSIL Plugs provide proven sealing solutions for all metallic, plastic and GRP pipe systems. Tested to international standards, our products ensure long-term protection, even under extreme pressure and temperature conditions.
Your Challenge
- Proven across the UK’s naval fleet
- Certified protection against fire, water, gas, smoke, EMP
- 50+ year service life, maintenance-free
- Flexible, re-enterable systems for future upgrades
Let’s protect your project together
Tell us about your project and we’ll get back to you within one working day.
Phone: 01670 739 970
Email: enquiries@csdsealingsystems.co.uk
Visit Us:
Unit 6, Easter Park,
Nelson Park West,
Cramlington,
NE23 1WQ
Nelson Park West,
Cramlington,
NE23 1WQ
Sample Page
Engineered for critical infrastructure, the NOFIRNO Duct Seal system is the go-to solution for high-performance protection in underground and above-ground ducting. Whether it’s a fibre optic rollout, a utility substation, or a high-risk industrial environment, NOFIRNO delivers unmatched resistance to fire, water, gas, and rodent ingress – all in one flexible, low-maintenance system.
With over 100,000 kits installed across the UK, NOFIRNO is a trusted choice for clients who demand long-term reliability without compromise.Lorem
Key Benefits
- Up to 4 hours fire resistance – independently tested and certified.
- Watertight and gastight – pressure-tested up to 10 bar in small openings.
- No frame required – flexible installation in any shape or size duct.
- Future-proofed – easy re-entry for adding or replacing services.
- Proven longevity – over 50 years of age-tested sealing integrity.
Key Benefits
- Power and utility networks
- Data centres
- Transportation infrastructure
- Civil and commercial construction
- Renewable energy facilities
Useful Information
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