Radon sealing
Water sealing
Sealing ring, radon seal
W802
Skelda W802 EPDM rubber embedding ring for water and/or radon sealing when embedding round pipes in concrete floors and walls.
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Radon and water sealing W802
Used for embedding pipes or cables with outer diameter from 16mm upwards. Seals against groundwater (up to 4m water column) and against soil radon gas.
- Tested by RISE - gas tightness
- Tested by the German District Heating Institute and Studsvik Energiteknik - tightness against liquids up to 0.4 bar (0.1 bar at ± 5 mm axial movement)
- EPDM rubber - stainless steel hose clamp AISI 304
- Complies with standard EN 681-1 Sealing rings - Material requirements for sealing rings for water and drainage applications
- Small footprint - allows for tight pipe/cable placement
- A hose clamp minimizes installation time
- Sizes for pipes and cables with Dy 16 mm and up
- Special sizes on request (from 200 mm and up)
Examples of uses
- Against groundwater - ground radon around pipes and cables
- Wells for circulation in cast-in-place basins
- Systems for waste collection
- Corrected (flex pipes) through concrete to pumping stations, service chambers, etc.
- Plastic and concrete wells
- District heating pipes
Dimensions and article numbers
Assembly instructions
- Fit the sealing ring and hose clamp to the pipe.
- Tighten all hose clamps so that the ring cannot move axially or radially on the pipe and so that good contact is achieved between the pipe and the rubber ring around the entire circumference of the pipe. The effective sealing quality of the W802 depends in part on the ability of the hose clamp to hold the ring close to the pipe during the concreting process.
- Make sure that the ring is completely covered by concrete. This is especially true where a pipe is angled in a concrete floor, e.g. radon sealing of drains. In such cases, it would be better to mount the ring on the drain itself.
- Vibrate the concrete so that it makes a good connection to the rubber ring. Contact us for alternative mounting suggestions.
The W802 embedding ring is normally slightly smaller in diameter than the pipe in question (2 - 8% depending on the pipe diameter). If the seal needs to be pushed along the pipe, a lubricant can be used or the ring can be "rolled" along the pipe. We can supply lubricant. If a hole is drilled in a concrete wall in preparation for casting a pipe/sealing ring, we recommend the following minimum drill hole: