The Link-Seal System

From creating a perfect circular hole to quickly, efficiently & permanently seal the annular space around pipes passing through wall, floor or ceiling, Projex Group have the products & expertise to provide the long term no leak solution.

Link-Seal® are supplied as a belt with a series of interconnecting rubber links & bolts that when tightened form a mechanical seal between the outside of the pipe & the substrate it passes through.

They are widely recognised in the industry as the most effective way to permanently seal this gap known as the annular space. The Link-Seal System is used to seal around the outside diameter of pipes passing through walls, floors or ceilings.

Whether your pipe or the substrate that it passes through is constructed from HDPE, plastic, concrete or one of our specially manufactured steel sleeves, then Link-Seal provides the ultimate no-leak solution for the sealing of the annular space.

Link-Seal® Mechanical Seals:

Link-Seals can also be used in combination with Century-Line Sleeves, Steel Sleeves, External Divided Sleeves, Pre-Cast/Formed concrete penetrations (Cell-Cast Interlocking Hole Forming Discs) and can be installed directly into a Cored Wall Opening

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Products that can be used in combination with Link-Seals Mechanical Seals

Century-Line® Sleeves:

Century-Line Sleeves are the quickest, easiest & most efficient way of creating the perfect circular holes in poured concrete barriers.

They are installed onto the formwork prior to the concrete pour.

Manufactured from HDPE, they are lightweight and also adjustable to suit the wall thickness.

Suitable for creating holes ranging from 50mm-635mm.

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Key benefits

  • Create perfect round sleeved hole in concrete poured barriers
  • Positive hydrostatic seal
  • Easily installed - only one worker and no special tools
  • Adjustable to wall thickness, can be cut on-site
  • Nailer-end caps to position sleeve precisely
  • Resistant to water migration, acids, alkalis and other organic solvents
  • Never rust, corrode or degrade
  • Suitable for temperature between -40C to 66C
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Cell-Cast® Interlocking

Cell-Cast® Interlocking Hole Forming Discs

Are used to create a larger round hole in poured concrete surfaces ranging from 743mm to 1645mm.

They are installed onto the formwork prior to the concrete pour.

They are manufactured from thermoplastic, are durable & lightweight

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Key benefits

  • Consistently produces dimensionally accurate openings
  • Easy to install
  • Complete assembly accomplished in minutes
  • Reduces material costs by 30 % to 50 %
  • Cuts labor costs by 50 % to 70 %
  • Minimises freight and handling charges
  • Lightweight
  • Sized to work with Link-Seal Mechanical Seal
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Steel Sleeves:

Used for non-standard installations where exposed to hydrocarbons, extremely high temperatures, aggressive chemicals or a fire rating is required.

The casting in of a Steel Sleeve to create the penetration is part of the solution, next is to install the correct Link-Seals for the nominated chemical or desired rating.

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Key benefits

  • Create a smooth and perfect circular penetration
  • Protects the substrate core hole
  • Resistant to hydrocarbons, high temperatures and aggressive chemicals
  • Can be used when a fire rating is required
  • Can be used with Link-Seal Mechanical Seal
  • Very easy to install
  • Available in a wide range of sizes
  • Prevents liquid migration
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External Sleeves:

The External Sleeves solve core hole penetration seals.

They are bolted to either side of a wall where a cable or pipe protrudes & is designed to overcome installation issues such as the following; non-centered pipes or cables, oversize penetrations, incorrect core hole installations and many more.

The External Sleeves are available in 2 versions for new and retrofit applications.

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Key benefits

  • Can be fitted around pipes or cables that are already installed and in use
  • Suitable for pipes from 50mm to 1600mm OD
  • Stainless steel base and collar for longevity
  • Easy and Quick to install (no special tolls required)
  • Can be re-fitted and re-used
  • EPDM or SBR rubber gasket seals to substrate
  • Two or more penetrations can be fitted on a single base plate
  • Can be used with Link-Seal Mechanical Seal
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Why We Recommend These Products

For more than 15 years Projex Group have been supplying Link-Seals, Century-Line Sleeves, Cell-Cast Discs and other products into small & major infrastructure projects. These include Gas Plants, Oil Refineries, Hospitals, Water & Waste Treatment Plants where the sealing of these penetrations is extremely critical & of the highest importance.

We are confident when we state – that installing these products will exceed your expectations and, that the Link-Seal Mechanical Seals are truly the premier method for sealing pipes.

Link-Seals are extremely robust and are specially formulated to withstand attack from ozone, sunlight, water and a wide range of chemicals.

Link-Seals have no down time on curing and unlike most grouts, foams, epoxy’s or cementitious products they do not shrink whilst curing & require no maintenance afterwards.

What Projex Group Can Do For You

Our job is to specify & guide you as to which product is suitable for your specific application & to ensure the complete solution is achieved.
We can provide on-site project consultations or alternatively you can provide drawings that we can assist & advise on. To contact us please email ring or fill the form below and one of our technical staff will contact you to discuss your requirements.
We can resolve complex calculations and assist you in selecting the correct sealing element for each project application.
We maintain large stocks of Link-Seal, supplying all the materials you need within a day – depending on where in Australia you are located.

Why settle for traditional sealing methods which are costly, time consuming & ineffective?

Make An Enquiry

To speak to a Projex representative, please enter your details below. We will respond to your enquiry in the next 24 hours.