Innerlynx® wall penetration seal
Innerlynx is the solution that guarantees perfect leak-tightness where a pipe penetrates a wall or bulkhead.
The Innerlynx wall penetration seal is composed of flexible EPDM links assembled together by bolts made from grade 1.4401 (316) authentic stainless steel. It goes around the pipe and a seal is formed by tightening the screws: the elastomer is compressed and sandwiched between the pipe and the wall.
Innerlynx is suitable for all kinds of pipe (steel, asbestos, concrete, cast iron, stoneware, HDPE, PVC, Polyester, PP), for pipe sizes from 20–3000mm nominal diameter, and for any solid bulkhead (brick, concrete etc). (Would question use with HDPE since that material creeps under load and will cause a leak in long term)
Our Innerlynx penetration seals can withstand 2.7 bar external pressure and temperatures from −40°C to +140°C. They have very high UV and ozone resistance. They are ideal for sealing around pipes entering tanks and entering basements below ground water level.
As an optional extra, our Innerlynx seals can be supplied in nitrile for better resistance to hydrocarbons or in silicon rubber for resistance to extreme temperatures from −55°C to +204°C (please enquire).
To help define the right link assembly for your bulkhead seal, use our calculation spreadsheet (see below).
Installation / Application
The installation method for bulkhead seals is very simple.
After drilling or casting a hole, (enquire with us for the various accessories), first position the pipe. It must be central in the hole and supported on either side of the wall. Innerlynx is not designed to act as a pipe support.
Next wrap the chain of Innerlynx links around the pipe and connect the ends together. At this stage verify the bolts are oriented correctly: the bolt heads must be located facing the operator. Do not be tempted to remove links: some play is normal.
Take up the slack on the Innerlynx seal if necessary using a ratchet wrench or equivalent, applying up to two full turns to each bolt.
Now slide the Innerlynx into the annular cavity between the pipe and the wall penetration. Start tightening, beginning with the bolt located at the top of the ring. Keep tightening until the rubber element starts to “swell”.
Continue tightening, bolt by bolt, in order to obtain the same preliminary tightening load on each element.
Finish off with a “final squeeze”: start again with the bolt at the top of the ring and tighten up to the recommended torque.
When installation is complete, check the elements have been uniformly tightened and make good contact with the wall.
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Dimensions in mm