Duct Seals
Protecting Cable Networks Against Rodents Using A Brush Solution
October 19th, 2020
SUPERSEAL – Brush Solution For Protecting Cable Networks
Brush Solution For Protecting Cable Networks
SUPERSEAL
Rodents not only present a significant risk to human health but also to the integrity and safety of buildings, equipment and cable networks. Electrical enclosures, network installations and trackside trunking provide warm, dry places for rodents to nest.
Rodents need to chew down their constantly growing teeth. Damage to electrical wiring and cables is most hazardous as it causes power shortages, equipment failure and even fires.
Independent tests show that the SUPERSEAL brush strip gives excellent protection against rodent intrusion.
➡ Further Reading Rat & Rodent Resistant Cable Duct Seals For LV MV HV Cables & Substations

SUPERSEAL FR
SUPERSEAL FR is a flame retardant, halogen free brush strip seal with low smoke emission, excellent bend recovery, chemical and temperature resistance. Hardwearing filaments flex and adapt easily to irregular surfaces without impairing moving parts to protect against rodents, uncontrolled airflow, dirt, dust. noise and cold smoke.
SUPERSEAL FR is available with a choice of durable aluminium carriers. If something lighter is required it can be tailored to custom lengths, brush heights, fixing holes and carrier finishes.
Available with a choice of 180º, 45º or 90º aluminium carrier, the SUPERSEAL is available in cut sizes, with prefabricated fixing holes or slots and painted or anodised carrier finishes to suit application.
- UL94-V0 flame retardant filament
- Durable aluminium carrier
- Custom sizes and finishes available

Flame Retardant, Hard Wearing & UV Stabilised Brush Strip
| SUPERSEAL FR brush strip with aluminium carrier | |||||
| Brush Height | Brush Length | 180º Carrier | 45º Carrier | 90º Carrier | |
| LIGHT | 26 | 3000 | BFF3026 | BRF3036 | BTF3026 |
| MEDIUM | 49 | 3000 | DFF3049 | DRF3049 | DRF3049 |
| HEAVY | 64 | 3000 | GFF3064 | GRF3064 | GTF3064 |

Kleeneze-KOTI is the UK’s leading brush strip manufacturer. Our range of flexible SUPERSEAL brush strip seals and door seals is the largest in the UK, available from stock for next day delivery. If you need something different, we have over 50 years experience in custom technical brush strip solutions for all industrial and commercial applications.
THORNE & DERRICK
Thorne & Derrick are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – servicing businesses involved in cabling, jointing, substation, earthing, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV. Supplying a complete range of power cable accessories to support the installation and maintenance of low/medium and high voltage power systems:
- Slip-on Cable Terminations
- Cold-shrink Cable Terminations
- Heat-shrink Cable Terminations
- Cable Joints – Heat & Cold-shrink
- Separable Connectors (Euromold)
- Surge Arresters & Switchgear/Transformer Bushings
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

Protect Signal Cables From Rodent Damage | Brush Solutions For Railways
October 19th, 2020
RODENTBRUSH – Brush Solutions For Rodents
Brush Solutions For Rodent Control On Railways
RODENTBRUSH
Trackside cable ducting and electrical junction boxes are warm dry places, with many points of access through which a determined rodent can squeeze and make a nest. Problems occur because rats love to chew and as they gnaw the plastic casing they can dangerously expose vital signal cables.

A break in signal control can cause whole sections of the railway to be out of use until the fault can be located and repaired. This results in expensive engineering costs and possible train delays.
➡ Further Reading Rat & Rodent Resistant Cable Duct Seals For LV MV HV Cables & Substations

Created and developed in close association with Railtrack, the RODENTBRUSH is specially designed to fill the spaces around cabling where rats and mice get in. RODENTBRUSH is flexible, flame retardant and offers the simplest solution to prevent cables from being chewed and subsequent signal failure;
- Simple to install and remove for cable maintenance
- Maintains airflow in the gap, avoiding cable overheating
- UL94-V0 flame retardant brush material
- Network Rail certificate of Acceptance PA05/0110
RODENTBRUSH has been installed successfully by rail contractors across the UK and France, avoiding expensive engineering costs and delays. Trials show that rodents don’t like the feel of the filament on their faces and whiskers.
In trackside ducting, RODENTBRUSH fills the cavity and deters rodents from entering. In signal boxes and enclosures, RODENTBRUSH can be pushed into any gaps and spaces at the base of the compartment to act as a deterrent to inquisitive rats.

RODENTBRUSH in Trackside Cable Ducting
Unlike other forms of pest control, RODENTBRUSH can be easily removed for routine maintenance and then replaced foe ongoing cable protection. RODENTBRUSH can be exposed to all elements allowing air to circulate and water to drain away. The result is protected cables that allows the network trains to keep moving.
The RODENTBRUSH is a flexible twisted in wire brush with an insulate core, flame retardant fill material and protective moulded end caps.
Network Rail Certificate Of Acceptance PA05/01110
RODENTBRUSH has been tested and approved by Network Rail for use as a deterrent to rodents in cable troughs containing signalling or telecommunication cable and similar areas of infrastructure.
| Brush Diameter | Brush Length | Product Code |
| 100mm | 500mm | S85FRS0001 |
| 1000mm | S85FRS0002 | |
| 2000mm | S85FRS0003 | |
| 5000mm | S85FRS0004 |

Kleeneze-KOTI is the UK’s leading brush strip manufacturer. Our range of flexible SUPERSEAL brush strip seals and door seals is the largest in the UK, available from stock for next day delivery. If you need something different, we have over 50 years experience in custom technical brush strip solutions for all industrial and commercial applications.
THORNE & DERRICK
Thorne & Derrick are national distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – servicing businesses involved in cabling, jointing, substation, earthing, overhead line and electrical construction at LV, 11kV, 33kV, 66kV and EHV. Supplying a complete range of power cable accessories to support the installation and maintenance of low/medium and high voltage power systems:
- Slip-on Cable Terminations
- Cold-shrink Cable Terminations
- Heat-shrink Cable Terminations
- Cable Joints – Heat & Cold-shrink
- Separable Connectors (Euromold)
- Surge Arresters & Switchgear/Transformer Bushings
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

Cold Shrink-Fit Method vs. Heat Shrink-fit Method
July 7th, 2020
Cold Shrink-Fit Method vs. Heat Shrink-fit Method
Cold Shrink V Heat Shrink
Hauff Technik
Hauff Technik are leading manufacturers of sealing systems for cables, pipes and building entries. They have been protecting buildings from penetrating water, gas, fire, dirt and vermin for the past 60 years. Specialising in sealing cable entries for secondary substations, Hauff Technik’s innovations help protect and set standards in the energy supply sector.
Hauff Technik’s new assembly challenge they pit the cold shrink-fit method against the heat shrink-fit method.
Both variants have their benefits. The cold shrink sleeve can be assembled without the need for tools. The cold shrink-fit method can only be used outside of buildings, however the sleeve remains permanently elastic.
The hot shrink-fit method can be used on the outside or inside of buildings. A hot air gun or gas burner is required for assembly. The heat shrink sleeve remains rigid, but is gastight and waterright up to 2.5 bar.
Video: See The Dual Below
| RSM Cold Shrink-fit Sleeve | WSM Heat Shrink-fit Sleeve | |
![]() |
![]() |
|
| Application Field | Outside of the building | Outside and inside of the building |
| Installation | Tool-free | Heatgun/Gas Torch |
| Shrink-fit Sleeve | Permanently elastic | Inelastic |
| Tightness | Gas – and watertight up to 1.0 bar (14.5 psi) | Gas – and watertight up to 2.5 bar (36.3 psi) |

Thorne & Derrick
Thorne & Derrick distribute the most extensive range of Low & High Voltage Cable Installation & Electrical Distribution Equipment to the Power Transmission & Distribution industry in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors.
We service UK and international clients working on underground and subsea cables, overhead lines, substations and electrical construction at LV, 11kV/33kV up to EHV transmission and distribution voltages.
Key Products: MV-HV Cable Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Copper Earth Tapes, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.
Distributors for: 3M Electrical, ABB, Alroc, Band-It, Cembre, Centriforce, CMP, Elastimold, Ellis Patents, Emtelle, Furse, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, ProGARM, Prysmian, and Roxtec.
- Scope –single-source supply of extensive range of products
- Stock – a multi-million pound stock holding provides complete global supply solutions
- Staff – technical support from a trained, proactive and friendly team
- Delivery – UK stock turnaround with express logistics to all international destinations

Specialist Electrical Equipment Distributors for High Voltage Power Systems
Hauff-Technik Officially Approved By Scottish & Southern Electricity Networks (SSEN)
June 25th, 2020
Hauff-Technik
SSEN has fully approved the Hauff-Technik cable and duct sealing solutions for their distribution network. Thanks to their business partner Emtelle, the leading manufacturer of sealing systems, Hauff Technik, have reached another milestone in our UK business.
Both companies are happy with the latest achievement and expect a positive effect at other important utility companies.
Rob Gasken, Product & Sales Engineer at Emtelle, says: “Having worked with Hauff-Technik for a number of years now, supplying their products as part of our full end-to-end ducting network solution, we have no doubt that this will be an enhancement to SSE networks.

We’re proud to be in an existing successful partnership with Hauff-Technik, and to be the named supplier of their mechanical press seals in the SSEN approved product register. Great to see that these superior sealing methods are gaining the official recognition they deserve.”

Jan Holly, Hauff-Techniks Head of Sales UK & Ireland, emphasises „The cooperation with Emtelle has always been full of common interests. The SSE approval is another evidence for what we can achieve with a shared, customer oriented strategy.“

Emtelle cable duct provides underground cable protection to LV-HV cables, including UK DNO approved Class 1 PVC cable duct for 33kV high voltage power cable protection.
Thorne & Derrick
Thorne & Derrick distribute the most extensive range of Low & High Voltage Cable Installation & Electrical Distribution Equipment to the Power Transmission & Distribution industry in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors.
We service UK and international clients working on underground and subsea cables, overhead lines, substations and electrical construction at LV, 11kV/33kV up to EHV transmission and distribution voltages.
Key Products: MV-HV Cable Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Copper Earth Tapes, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.
Distributors for: 3M Electrical, ABB, Alroc, Band-It, Cembre, Centriforce, CMP, Elastimold, Ellis Patents, Emtelle, Furse, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, ProGARM, Prysmian, and Roxtec.
- Scope –single-source supply of extensive range of products
- Stock – a multi-million pound stock holding provides complete global supply solutions
- Staff – technical support from a trained, proactive and friendly team
- Delivery – UK stock turnaround with express logistics to all international destinations

Specialist Electrical Equipment Distributors for High Voltage Power Systems
Underground Substation Cable Sealing | Protection of Metro & Rail Systems Against Moisture & Flood
November 26th, 2019
Underground Substation Cable Sealing
Underground Substation Cable Sealing
Product Category: Duct Seals
Application: Protection of Metro & Rail Systems Against Moisture & Flood
Sector: Rail
Product Installed: Filoseal+HD

Here are several site installation photographs of a cable sealing and substation asset protection project in the USA.
The MV medium voltage cables are installed 20 meters underground in a substation that is providing electrical power distribution to a subway metro station.
This is one of many sites where they have ongoing moisture problems associated with floodwater and environmental conditions.
Using FiloSeal+HD the client improved the environment inside the substation, reducing moisture, which was their electrical and substation protection objective.
One of the main issues with this project was cable separation of the 35kV power cables which are installed in triplex formation.
FiloSeal+HD uses hexagonal-shaped tubes to support and separate the MV cables, which is one of the many reasons, this Utility decided to select and specify Filoform.
- Cable Sealing System – FiloSeal+HD + Water Blocking System
- Cables – 600MCM, 35kV TR-XLPE, Triplexed Cables
- Cable Duct Size – 160mm (6″)
As you can see, the visual element is far neater and professional, while also providing the following features:
- Up to 2 bar Pressure Resistance (Gas & Water)
- Flexible, one component, sealing compound – resistant to rats
- Resistant to Hydrogen Sulphide/Methane and aggressive gases
- Non-Hazardous – complies with 2011 NEC Articles 225.27, 230.8, 300.5(G), 300.7 (A) on Raceway Seals, and 501.15 (B)(2)
- Suitable for renovations – the cable duct seals can be installed retrospectively
DUCT SEALS




More Cable & Duct Sealing Applications
- LU London Underground Tested Cable Duct Seals – LUL S1085 Standard
- Correctly Sealed Cable Ducts Will Protect From Ingress Into Potable Drinking Water
- Sealing Cables, Switch Hall & Grid Transformer Bases On 132kV Wind Farm
- Duct Seals – Sealing Cable Ducts Containing Low Voltage Control Cables
- Sealing Cable Ducts Containing Multiple Single Core Cables In A Data Centre
- Trefoil Cables – Sealing Ducts & Cleating Trefoil Cables Up To 33kV
THORNE & DERRICK INTERNATIONAL
Since 1985 Thorne & Derrick based in the UK have been specialist distributors of LV, MV & HV Cable Installation, Jointing, Substation, Arc Flash Clothing & Electrical Safety Equipment – customers include UK and worldwide contractors, specifiers, traders and end-users involved in medium and high voltage cable installations, cable jointing, substation, overhead line and electrical construction.
We are specialist stockists and distributors of 11kV-33kV Cable Joints, Terminations & Connectors from manufacturers including 3M, Pfisterer, Prysmian and Nexans Euromold in a selection of cable jointing technologies including push-on, heat shrink and cold shrink joints and cold shrink terminations.
♦ 132kV Surge Arresters | 132kV Link Box Stockists

MV HV | Medium & High Voltage Power Products, Tools, Cables & Electrical Equipment

