Sealing ring, water sealing

W801

Used when embedding pipes with outer diameter >110mm, where risk of water leakage may occur and where the pipe is expected to move axially. Also seals against soil radon gas. The seal is adjustable after casting and can be mounted on both the inside and outside of the concrete wall.

Quotation request

Water and radon seal W801

Tested by the German District Heating Institute and Studsvik Energiteknik - tightness against liquids with sand admixture, up to 0.74 bar (0.1 bar at ± 100 mm axial movement)
EPDM rubber - AISI 304 stainless steel hose clamp - hot dip galvanized steel clamps
Self-lubricating - to minimize friction between the jacket and sealing
Complies with standard EN 681-1 Sealing rings - Material requirements for sealing rings for water and drainage applications
For pipes in standard dimensions from Dy 110 mm and up
Customized sizes on request
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Examples of uses

District heating pipes
District cooling pipelines
Stormwater system
Industrial wiring

Dimensions and article numbers

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TUBE OD	ART. NO
110	1659204
125	1659302
140	1659400
160	1659505
180	1672000
200	1816100
225	1816205
250	1816303
280	1816401
315	1816506
355	1816604
400	1816702
450	1816800
500	1816905
560	1817006
630	1817104
710	1817202
800	1817300
900	1818206
1000	1818500

Assembly instructions

Make round holes in one mold wall for the hose clamp flange of the pipe and grease groove seal. Make the hole in the other mold wall slightly larger than the outer diameter of the jacket pipe.
Fit both rubber rings on the pipe. Turn the grease groove seal and fill the grease groove with the supplied lubricant. Twist the ring back and fit both rubber rings next to each other. Press the rings against the mold wall (the hose clamp flange of the larger rubber ring should pass through the mold wall) and tighten the hose clamps so that good contact is made with the pipe.
If the pipe is to be subjected to axial movement, the part of the pipe not occupied by the rubber rings must be protected with some kind of spacer material, e.g. tar paper. This is to avoid direct concrete casting against the casing pipe.
Reinforce and pour the concrete wall. Vibrate the concrete so that a good connection is obtained with the rubber rings.
After demoulding, drill holes in the concrete wall for the clamping claw expander bolts. Use a clamping claw as a template. Place the end clamps max. 50 mm from the open end of the clamping ring. Distribute the remaining clamps evenly around the pipe.
Fit the tensioning and clamping claws. Adjust the clamping ring so that it only presses against the rubber ring and not against the concrete wall. Tighten the clamps so that the grease groove seal is pressed against the concrete wall. Check that the outer hose clamp is tightened.

Number of clamps required for the pipes
110-315	8 UNITS
355-560	10 UNITS
630-710	12 UNITS
800-1000	16 UNITS

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W801 sealing can be partially dismantled and adjusted after casting. Contact us for alternative mounting suggestions.

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Dimension (mm)	A	B	C	D	E
110-180	26	25	40	22	37
200-1000	26	31	50	27	44

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Frequently asked questions about sealings

How much load can the sealings generally withstand?

It is important to note that the sealings are not intended to act as supports. The pipes must be supported on both sides of the seal.

Which sealings can withstand axial movements?

W801, W803 and W804 are all tested for generous axial movements.

Do your sealings protect against both radon and water?

Many of our sealings protect against both radon and water. You can see from the labels on the products which ones protect against what.

Where can I find more data sheets for other products?

Here is a link to all the data sheets we have: Data sheets

How big sealings can you deliver?

We have sealings in stock with a diameter of up to 1000 mm. We have the ability to build custom sealings and have supplied sealings up to 2000 mm diameter, but there are no limits to how large sealings we can make.

Call or email us to discuss your sealings needs in more detail. 033-10 04 40 or info@skelda.se

Does W802 work on corrugated pipes?

It is possible to install W802 on corrugated pipes provided that it lies on one or more of the tops of the pipe. Should there be very wide gaps on large pipes, it may be necessary to seal the gap in the corrugation before installing the seal.

Do you have any radon sealing that is Nordic Swan Ecolabeled?

W802 is included in the House Product Portal and is therefore approved for Nordic Swan Ecolabel projects. These types of sealings cannot be Nordic Swan Ecolabeled and this also applies to competitors' products. But if they are included in the House Product Portal, it works.

Which sealings are approved for radon?

W801, W802, Link Seal, Compact and Nofirno are all approved radon sealings.

Water and radon sealings

Fire sealing

Other products