Duct Seals

Sealing Underground Cables & Pipes Under Constant Water Pressure

Sealing Underground Cables & Pipes Under Constant Water Pressure

Cable Duct Seals

Do you want to prevent water ingress into building services or substation ducts?

Thorne & Derrick can specify and supply Roxtec duct seals to avoid the risk of costly downtime and power outages due to corrosion, damage to equipment or partial discharge. Roxtec UG (underground) solutions for cables and pipes protect your site against environmental ingress in both normal and flood conditions. The cable transit type seals withstand cable bending forces and are resistant to constant water pressure. Keep your equipment dry and safe by ensuring a long-lasting sealing barrier against flooding, gas, humidity and rodents.

User-friendly Flexibility

Roxtec UG™ seals are easy to install even in wet conditions and in environments with running water.

• Available for single or multiple cables and pipes
• Multidiameter™ by Roxtec – adapts to cable and pipe sizes through removable layers
• Built-in spare capacity for future needs

Retention Capabilities

The seals are tested and developed to provide excellent cable retention.

• Withstands pull force of up to 15 000 N and a weight load of up to 1 500 kg
• Withstands extreme cable bending
• Can expand up to 5 mm to aid installation and ensure a perfect fit

Tight and Resistant Cable Sealing

Roxtec UG™ solutions are IP 68 rated. They are tested for constant and catastrophic water pressure. Thanks to their high grade acid-proof stainless steel, they are suitable for the harshest of environments.

• Constant water pressure up to 0.3 bar (3mH2O)
• Catastrophic water pressure up to 1 bar (10mH2O)
• Gas pressure up to 0.3 bar
• Corrosion and rodent safe

Basic steps of a Roxtec knock-out sleeve installation

Pour concrete into the mould	Knock out the lid	Insert the Roxtec cable seal

Knock-out Sleeve Providing Spare Capacity

Use the Roxtec knock-out sleeve to block openings you might want to use later on. Plan your ducted openings, with the added benefit that any spare or unused duct is sealed without additional cost. You only need to buy seals for openings that accommodate cables.

This is an area efficient solution for reducing the footprint and for making sure the building is dry both during and after construction.

Think First

Include knock-out sleeves in the design work for a new building or kiosk. You decide if you want the seal on the inside or the outside and whether you want to connect sleeves into a cluster of openings. Then cast the sleeves into the structure, and knock them out when needed. Use sleeves to ensure consistent results in terms of position and formation of holes and avoid deformed ducts.

Basic steps of a Roxtec RS UG™ seal installation

Make an aperture with a core drill	Insert pipe and RS UG halves	Tighten the seal

Adaptable & Tailor-made Cable Duct Sealing Solutions

Roxtec UG™ solutions are perfect for use around existing cables and pipes, and the smart design simplifies retrofit. The seals fit into the knock-out sleeve as well as in conduits and core drilled holes.

The soft yet firm rubber adapts to uneven openings and ducts. Our openable seals do not suffer from failure in the same way as traditional methods do when the cables or pipes move and expand.

Customised Tools

If you have specific needs or face challenges that require special Roxtec UG™ seals, please contact our T&D and we will help you create tailor-made sealing solutions.

Sealing Underground Cables Application Areas

Roxtec UG™ seals are ideal for cables and pipes entering buildings via concrete foundations. They provide excellent cable retention, eliminate flooding and prevent humidity from damaging equipment. You can use them in vaults, duct banks or cable trenches.

Cable Types

• Power
• High Voltage Power
• Signalling
• Telecom

Pipe Types

• District heating
• District cooling
• Water
• Wastewater
• Plastic, steel and isolated pipes

The Roxtec RS UG™ seal is designed for single cables and pipes entering buildings via foundations.	The Roxtec R UG™ transit is ideal for several cables of different sizes in one opening. It enables you to build in spare capacity.	Roxtec H3 UG™ seals are designed for cables in trefoil formations. The design simplifies retrofit installations.	The Roxtec knock-out sleeve provides spare capacity and ensures tightness prior to cable routing.

ROxtec

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.

LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

THORNE & DERRICK 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 HV 

T&D Providers Of Jointer Training Courses By Pfisterer CONNEX & Nexans Euromold

Heating, Dehumidification and Ventilation of Switch Rooms and Control Rooms at Grid, Primary and Major Network Substations

Extract from : Company Directive | STANDARD TECHNIQUE : SP1N 

Owner : UK DNO Western Power Distribution

Sealing Cable Entries

In the UK the DNO’s (Distribution Network Operator) hold a statutory requirement to prevent danger due to the influx of water, or any noxious or explosive liquid, hydrocarbon or gas from the surrounding ground into substations, street boxes and buildings. The electric utility will have an approved method and material to seal ducts in all new, altered or retro-fitted cable installations – this includes the sealing of cable ducts where the ducting enters the switch gear building. View our complete range of UK DNO Specification & Private Network duct seals.

Thorne & Derrick

T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.

Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.

All international sales enquiries can be serviced and supplied by our Export Power Team.

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 HV 

Sealing & Waterproofing | Denso Aids Installation Of Erskine Bridge Crash Barrier

Sealing & Waterproofing

Densoband

Location: Glasgow, Scotland

Client: Transport Scotland

Contractor: Highway Barrier Solutions

Engineers: Scotland TranServe

Products: Densoband

Date: February 2015

Densoband^™ has been chosen for use in the installation of new crash barriers on the A898 Erskine Bridge, Glasgow. The volume of traffic has greatly increased since the bridge was opened in 1971.

Consequently the existing barriers in the central reserve were not providing appropriate levels of protection to the bridge towers and cable anchorages against impact from the largest HGV’s. Similarly, nearside barriers needed replacing in this project. All of the new barriers were designed by Flint & Neil, specialist bridge consultants.

The work was carried out for Transport Scotland who appointed Highway Barrier Solutions (HBS) as Principal Contractor. Scotland TranServe is the Engineer who managed the work.

The Glasgow branch of Briggs Amasco, specialists in industrial roofing and surface waterproofing recommended the use of Densoband in the reinstatement of the road asphalt adjoining the steel posts of the new crash barriers. Densoband was used to form a flexible weatherproof seal on the vertical joint face between the asphalt and steel.

Working in conjunction with Scotland TransServe, Briggs Amasco applied all the asphalt reinstatement and Densoband. Densoband is approved by the Department of Transport in the Manual of Contracts 7th Edition for use in asphalt wearing course joints.

➡ T&D stock and distribute Denso products. See Denso Mastic Duct Seal 

DENSOBAND – Sealing Joints In Highway Construction & Maintenance

Densoband

Densoband™ is a polymer modified bitumen compound in strip form, used for sealing joints between asphalt to asphalt, concrete and road castings in road construction and bridge expansion joints. It can also be used for airport runway joints and light railway/tram construction to form a flexible seal between the track and the surrounding asphalt.

Containing filler, a flow control additive and a root deterrent, Densoband forms a flexible watertight seal which allows for road movement from cyclic traffic load and thermal changes to prevent cracking and subsequent erosion.

ABOUT DENSO

Denso North America Inc. is a subsidiary of Winn & Coales International, a leading manufacturer of anti-corrosion coatings that include Protal liquid epoxies, Denso petrolatum tapes, mastics, primers, bitumen tapes, butyl tapes, hot applied tapes, and a full line of marine pile protection systems. Winn & Coales was originally established as a business in London, England, in 1883, and the first petrolatum tape manufactured in the UK was Denso tape, manufactured under license by Winn & Coales (Denso) Limited.

Denso tape was developed over 80 years ago for the “Long Life Protection” of buried steel pipelines against corrosion. The Denso SeaShield Marine Systems include fiberglass forms, epoxy grouts, underwater epoxies, injectable epoxies, petrolatum tape and wrap systems.

Further Reading

Sealing & Waterproofing of Cable Ducts Using Densoseal 16A | Thames Water Project

Denso Mastic Duct Seal | Densoseal 16A Sealing Cable Ducts

Denso Bore-Wrap | Prevent Coating Damage During Pipeline Installations

Thorne & Derrick are Specialist Distributors to the UK and international Construction 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 HV 

Sealing & Waterproofing of Cable Ducts Using Densoseal 16A | Thames Water Project

Densoseal 16A To Seal Cable Ducts At The Thames Water Site in Watford

Densoseal 16A

Sealing & Waterproofing of Cable Ducts

Thames Water Project

Flood Control International of Tavistock, Devon, completed a project at a Thames Water site in Watford consisting of sealing cable entries with Winn & Coales’ Densoseal 16A^™. There will be further Thames Water sites to follow in a major refurbishment of their sites resulting from a Flood Prevention report.

Densoseal 16A

Densoseal 16A is a non-setting, self-supporting mastic which may be applied to wet surfaces and will seal ducts and conduits against ingress of water and gas – suitable for CHP and biogas projects. It complies with British Telecom Specification M212C. It is suitable for sealing cable ducts, conduits and service entry pipes or sleeves, particularly below ground level, to prevent entry of water or gas into buildings. It may also be used for profiling mechanical joints on hot pipes to allow application of tapes.

Densoseal 16A – Self-supporting & Non-setting Mastic for Sealing Cable Entries & Ducts

About Denso

Denso North America Inc. is a subsidiary of Winn & Coales International, a leading manufacturer of anti-corrosion coatings that include Protal liquid epoxies, Denso petrolatum tapes, mastics, primers, bitumen tapes, butyl tapes, hot applied tapes, and a full line of marine pile protection systems. Winn & Coales was originally established as a business in London, England, in 1883, and the first petrolatum tape manufactured in the UK was Denso tape, manufactured under license by Winn & Coales (Denso) Limited.

Denso tape was developed over 80 years ago for the “Long Life Protection” of buried steel pipelines against corrosion. The Denso SeaShield Marine Systems include fiberglass forms, epoxy grouts, underwater epoxies, injectable epoxies, petrolatum tape and wrap systems.

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 HV 

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

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

How to Prevent Corrosion of Wind Turbine Anchor Bolts Using the Denso Petrolatum System – FREE Webinar

Denso Webinar l How to Prevent Corrosion of Wind Turbine Anchor Bolts l Register Here

Preventing Corrosion of Wind Turbine Anchor Bolts

Denso Tape System | Leaders in Corrosion Prevention

FREE Webinar

In this webinar, we will discuss how to easily prevent corrosion of wind turbine anchor bolts and other areas of these structures that may be subject to corrosion.

Addressed in this webinar will be:

• Brief history of Denso Tape which has been on the market for over 90 years.

• Discussion of how the Denso Tape System works and it’s many benefits.

• Ease of application overview and where additional Denso corrosion prevention products may apply.

Speaker Info:
Thomas Keadle
Technical Manager – NACE CIP Level 2

• Thomas Keadle has been a part of the Denso team for over 9 years. He is qualified to NACE CIP Level 2 and has been involved in numerous corrosion prevention projects in many different industries. Mr. Keadle has conducted hundreds of training classes and presentations on the proper application of Denso’s various corrosion prevention systems.

About Denso

Denso North America Inc. is a subsidiary of Winn & Coales International, a leading manufacturer of anti-corrosion coatings that include Protal liquid epoxies, Denso petrolatum tapes, mastics, primers, bitumen tapes, butyl tapes, hot applied tapes, and a full line of marine pile protection systems. Winn & Coales was originally established as a business in London, England, in 1883, and the first petrolatum tape manufactured in the UK was Denso tape, manufactured under license by Winn & Coales (Denso) Limited.

Denso tape was developed over 80 years ago for the “Long Life Protection” of buried steel pipelines against corrosion. The Denso SeaShield Marine Systems include fiberglass forms, epoxy grouts, underwater epoxies, injectable epoxies, petrolatum tape and wrap systems.

Densoseal 16A – Self-supporting & Non-setting Mastic for Sealing Cable Entries & Ducts

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 HV 

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

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