CSD RISE Duct Seals – Watertight & Gastight Duct Sealing

CSD RISE Duct Seals - Sealing Cable Ducts (Water Tight & Gas Tight)

CSD RISE Duct Seals – Sealing Cable Ducts (Water Tight & Gas Tight)

CSD RISE for Sealing Cable Ducts

CSD RISE Duct Seals are multi-cable and pipe transit sealing systems for cable duct seals, substations and building entries where there is a requirement to prevent the ingress or spread of water, gas and fire.

CSD Sealing Systems use individual rubber insert sleeves to provide an effective but simple solution to protect against water and gas ingress with the very highest levels of long term cable sealing performance.

The RISE Duct Sealing System most commonly used is both gastight and watertight consisting of only two components:

i) RISWAT Sleeves – rubber insert sleeves used to guarantee separation of low, medium and high voltage cables and provide a backing for the sealant layer

ii) FIWA Sealant – a high quality silicone based, fire stopping and a water repellent sealant.

The CSD RISE system can also be upgraded to provide up to 4 hours of fire protection in accordance with BS EN1366-3 by exchanging the rubber insert sleeves for the fire rated RISE sleeves.

Adding, removing or replacing cables or pipes is also an easy process.

RISE Duct Seals

RISE Duct Seals

CSD RISE Duct Seals

Features & Benefits

  • DSEAR compliant duct seals – congested cable ducts sealed from risk of fire spread and gas explosion
  • Hazardous area cable sealing – ATEX compliant duct seals for Zone 1 & Zone 2 potentially explosive atmospheres
  • Compatible with XLPE, EPR and most cable sheaths common to LV 11kV 33kV 66kV 132kV power cable
  • WIMES approved – Water Industry Mechanical & Electrical Specification accepted
  • 2 component sealing  – i) FIWA sealant ii) rubber insert sleeves
  • Age testing documents no deterioration in sealing performance for more than 50 years
  • Trefoil cable sealing of single core LV 11kV 33kV power cables into substations
  • Resistant to corrosive gas including methane, hydrogen sulphide and chlorine
  • No transit frame required
  • Re-enterable duct seal for adding LV, MV & HV cables
  • Quick and easy to install duct sealing system
  • Substation flood protection and protects against harmful gas ingress through unsealed ducts
  • Cost effective protection of cable ducts against water, gas and fire
  • Resistant to submersion in petrol, diesel and synthetic transmission oils
Duct Size Gas & Watertight Duct Seal Order Code Fire, Gas & Watertight Duct Seal Order Code


Installation for watertight and gastight cable duct, substation or building entry applications:

CSD RISE WG Rapid Duct Seal

CSD RISE WG Rapid Duct Seal

Step 1 – Ensure the cable duct opening is clear, removing any debris which may interfere with the installation of the RISE Duct Seal. Cut off any cable ties to enable thorough cleaning of the cables and the duct. The duct should also be dry. For any running water applications please contact us.

Step 2  An approved degreasing wipe should be used to remove all concrete, dirt, dust and oil residues from the inside 20-30mm of the duct or building entry. Several wipes may be needed. Any cleaning residue should be removed using a clean dry cloth. To ensure a good sealant bond the duct must be clean and dry before application of the FIWA sealant.

Step 3 – Use the degreasing wipes thoroughly clean any dirt or oil residue from the cables or any service pipe. Cleaning of all surfaces where sealant will be applied is an essential stage to ensure that a good seal will be maintained. Before moving on check that all surfaces are clean and dry, an inspection mirror and a torch may help for any difficult to access areas.

Step 4 – A RISE insert sleeve is applied around each cable. The insert sleeves are split length-ways and therefore can be fitted around the cable and then pushed into the penetration to a depth of 20mm.

CSD RISE WG Rapid Duct Seal

Step 5 – The remaining free space in the duct is filled using RISE blue filler sleeves type 27/19. For larger areas sleeves can be bundled together, electrical tape can be used around a bunch of RISE sleeves fixing these together. CSD RISE RAPID Duct System uses joined multi sleeves to make installation even easier.

Step 6 – Any small gaps should be filled with 18/12 size RISE blue filler sleeves. Its important to ensure sleeves are tightly packed into the transit to create a solid base for the application of the sealant. On trefoil or multi cable configurations, space cables out in the duct, to ensure easy application of FIWA sealant.

Step 7 – Push filler sleeves into duct to depth of 20mm, allowing for the application of the FIWA sealant layer.

Step 8 – Adjustments can be made to the RISE filler sleeves using a pair of long nosed pliers. Allowing the correct 20mm depth will ensure a suitable layer of sealant is applied and a good seal is maintained.

CSD RISE WG Rapid Duct Seal

Step 9 – Attach the nozzle to the FIWA sealant cartridge and snip the nozzle at an angle, this will help installation. For awkward sealing applications longer nozzles and angled applicators are available. To ensure a good bond is achieved, before adding the FIWA sealant, clean the duct and cables again using the approved degreaser.

Step 10 – Using a specialist high ratio caulking gun, apply the FIWA cable and duct sealant to the least accessible areas first (usually around cables). Apply sealant over sleeves, allowing to fill out to the required 20mm depth; a slight overfill is needed. Use a torch to check for gaps in sealant & apply more sealant if required.

Step 11 When working with the FIWA sealant we recommend the use of disposable nitrile gloves. Using the water spray, dampen the cellulose sponge. This is done to stop the sealant from sticking to the sponge whilst working with it.

Step 12 – Using a dabbing motion, firmly pat down the FIWA sealant, ensuring the sealant makes good contact with both cable and the duct wall. For installations in vertical ducts the sealant should stand just proud of the duct; allowing any water to run off the surface without pooling.

CSD RISE WG Rapid Duct Seal

Step 13 – Use the water spray to wet your gloves, this will ensure the sealant does not stick to the gloves.

Step 14 – The surface of the FIWA sealant should then be finished off by hand. Ensure a good smooth finish is obtained by the use of a fast skimming motion. Make sure there is a good seal around all of the cables, paying particular attention between the cables.

Step 15 – Take a final check with a torch to ensure sufficient sealant has been applied and the duct is properly sealed. If there are any areas that do not seem sufficiently sealed add more FIWA sealant in this area and smooth off as before. Clean any excess sealant from the edge of the duct and cables.

Step 16 – The completed RISE Duct Seal will provide a 1.5 bar (22 psi) water tight and 1.0 bar (15 psi) gas tight rated seal. The RISE system is proven to provide maintenance free protection for a period in excess of 50 years.

CSD RISE Duct Seals – Testing Standards

  • Lloyds Register – 1.5 & 2.5 Bar pressure tests with multiple services passing through the conduit
  • TNO Laboratory – Age Tested to prove sealing performance for 50 years
  • TNO Laboratory – Submersion test in petrol and diesel oils
  • TNO Laboratory – Resistance to salt laden atmospheres and solar radiation
  • BS EN1366-3 Fire Test – 4 hour fire protection
  • DEF Stan 02-711 – Low Smoke Index
  • DEF Stan 02-713 – Low Toxicity Index
  • ISO4589-3 – High Temperature Index
  • ISO4589-2 – High Oxygen Index

Using FIWA

FIWA is a fire-resistant sealant based on a single component silicone compound. FIWA is also water-repellent. High bonding strength. UV and Ozone resistant. The porous mass that is formed has excellent thermal insulation properties. FIWA is absolutely halogen free and has a low smoke index, a high oxygen index and low flame spread characteristics.

In the event of fire or temperatures in excess of 200 °C the sealant expands to about 10 times its original volume. During this process a porous mass is formed, which has excellent thermal insulation properties. In contrast to conventional materials that swell under severe heat exposure, the expansion of FIWA sealant is not caused by intumescent, but by chemical process (Intumescent means the occurrence of volume enlargement under the effect of heat, caused by the surface structure being inflated by fumes originating from the product). The advantage of this is that the expansion of FIWA is not accompanied by formation of large amounts of fumes.

BS EN 1366-3:2009 Fire Resistance Tests For Service Installations & Penetration Seals

BS EN 1366-3 specifies a method of test and criteria for the evaluation of the ability of a penetration seal to maintain the fire resistance of a separating element at the position at which it has been penetrated by a service.

Sealing Cable Ducts (Water Tight & Gas Tight)

Sealing Cable Ducts (Water Tight & Gas Tight & Fire Resistant)

Data Sheets