The Barangaroo redevelopment project was developed with wastewater recycling and a leading water reuse system, with the intention of creating a water positive precinct – that is, recycling and exporting more water than the drinking water that is imported.

Part of this impressive initiative was to seal the sewage mining schemes’ pipe penetrations.

The challenges

Critical pipe penetrations that may be exposed to aggressive chemicals must be permanently sealed.

Whilst the standard (EPDM) rubber Link-Seals are suitable for all water applications and resistant to chemical exposure, the engineers involved at Barangaroo were concerned that there may be exposure to highly aggressive chemicals at some periods, such as during maintenance, and that an alternative pipe penetration seal should be sought.

The solution

The Link-Seal “O” models are made from Nitrile Rubber and are fitted with reinforced nylon polymer pressure plates and S316 stainless steel fasteners.

The “O” model of Link-Seal is designed for sealing pipe penetrations that come into contact with harsh chemicals, hydrocarbons, fuels, oils and of course recycled water and the elements found within. They are designed to remain fully intact and provide perfect sealing when exposed to harsh chemicals.

The Link-Seal “O” model was selected for the site and the team at Projex Group assisted the engineers to determine core hole sizes for the specified pipes to pass through along with calculating the number and size of “O” model Link Seals to seal each penetration with precision.

This sponsored editorial is brought to you by Projex. For more information on Link-Seals, visit

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