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Application & InstallTechnical Information

What is the Link-Seal System

Link-Seals are a mechanical seal that are supplied in a belt form with a series of interconnecting rubber links, pressure plates & bolts that when tightened create a gas, air & watertight seal between the pipe & core hole (Annular Space).

Link-Seals are considered to be the premier method for permanently sealing the annular space between the pipes & penetrations of any size and the walls, floors or ceilings they pass through. In fact, any cylindrical object may be quickly, easily and permanently sealed, as they pass through barriers, by the patented Link-Seal modular seal design. Link-Seal Modular Seals can seal pipe penetrations ranging in size from 10mm to 3.6m diameter.

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Specially formulated to withstand attack from ozone, UV, water, hydrocarbons and a wide range of chemicals, Link-Seals are available in liquid, gas, oil, temperature & fire resistant models. With a wide variety of hardware/ elastomer combinations, Link-Seal modular seals are easily configured to achieve the best possible match for service conditions encountered. High temperature seals, fire seals (Factory Mutual Approved) and oil resistant seals may be ordered to meet special or unique service applications. Link-Seals are also available for a wide variety of special applications including:

  • temperature extremes
  • exotic chemical combinations
  • slightly “out of round” or non-centered installations.

Link-Seal can be use in combination with Century-Line SleevesSteel SleevesExternal Divided Sleeves and Cell-Cast Interlocking Hole Forming Discs and can also be installed directly into core penetrations.

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Key benefits

  • Positive hydrostatic seal – rated to 5 Bar – 500KpA
  • 2 hours fire rating (AS 1530.4 & 4072.1)
  • Handles extreme temperatures (-50 to 204 Celsius)(Model T)
  • Chemical, hydrocarbon and temperature resistant
  • Maximum protection against corrosion, 316 stainless steel fittings (except on T models)
  • Mechanical Seal – Can be adjusted and re-fitted
  • Long seal life
  • Can be installed while liquid is running through
  • Handles slight pipe movement
  • Maintenance free after installation
  • Easily installed by one person/contractor – only hand tools required
  • Saves time & money
  • No curing time required
  • Install in up to 75% less time compared to lead-oakum joints, hand fitted flashings, mastics or casing boots.
  • Rated at 20 psig (40 feet of head), which exceeds the performance requirements of most applications.
  • ISO Quality Assurance & manufactured in an ISO 9001:2000 certified facility.
  • 16 sizes, colour coded EPDM, Nitrile, & Silicone elastomers may be used with various hardware options to match performance characteristics with service conditions.

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

The Link-Seal Models

Whenever a pipe penetration needs to be sealed, Link-Seals will get the job done

Link-Seals are the most robust and versatile sealing method available and can be used in most applications and industries, including:

Water, waste-water, and drainage
Energy production
Marine Situations including ships
Oil & gas

Why is it that site engineers and maintenance contractors prefers to install the Link-Seals?

Over the years the team at Projex has worked with many designers, engineers, project managers and contractors in specifying and supplying Link-Seals for water and waste treatment plants, desalination plants, oil refineries, gas plants, hospitals, and sewage plants throughout Australia.

Projex Group has built strong relationships with their clients and provides quality products and service. The Link-Seal® Mechanical Seals have proven their durability and are known to be a trusted, tested & long-term solution.

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Here are just of some of the reasons why Link-Seals are their preferred choice:

  • If a leak occurs at any time in the future due to excessive pipe movement, the Link-Seals can be tightened to stop the leak.
  • If another pipe of the same diameter as the original pipe is then installed the original Link-Seals can be re-used to seal the penetration.
  • Installation times are significantly less than alternative methods.
  • If at any time in the future the pipe needs to be removed it is only a matter of loosening the Link-Seals & removing the pipe
  • Minor pipe axial movement can occur without breaking the seal.

What do you do if a leak is detected after installation of the Link-Seal mechanical seal?

Can Link-Seal be used with any type of pipe, even pipes that are not listed in the standard published charts?

How much angular pipe movement will Link-Seals allow and still maintain a seal?

Do you need any special tools to install the Link-Seals?

Should you grout over or seal over Link-Seals?

Can Link-Seals be Retro-Fitted and when is the recommended time to install Link-Seals?

The Projex Mission is to source and supply technically excellent products to meet the needs of owners, designers, insurers and operators of buildings and structures for specialist protection against water, industrial liquids, impact and corrosion risks.