Link-Seals Application & Installation


LINK-SEALS can be installed wherever a pipe passes through a solid structure. The most common use is through concrete walls and or floors.

Below are some typical installations of Link-Seals:

  • Bridge Construction
  • Bund/ Fire Protection Wall
  • Cable TV Installations
  • Coal Preparation Plants
  • Decorative Fountains
  • Desalination Plants
  • Dual Containment Seals
  • Electrical Isolation of Pipe Supports for Corrosion Protection
  • Elevator Shafts
  • Fire Protection Wall Penetrations
  • Floor & Wall Sleeves
  • Flow Restrictors in Sewer Maintenance
  • Fluid Overflow Devices
  • Guard Post Assemblies
  • High Pressure Tank Guards
  • Insulated Pipe Seals
  • Mechanical Contractors – Interior Piping Systems
  • Manhole Pipe Entry
  • Marine Applications
  • Mining
  • Offshore Oil Rigs
  • Parking Garage Column Protectors
  • Penetrations
  • Perimeter Berm Installations Around Tank Farms
  • Pile Driving Operations
  • Precast Concrete Walls
  • Pool Pipe Penetrations
  • Power Generating Dams
  • Pulp & Paper
  • Refrigeration Pipe penetrations
  • Road and/or Rail Crossings
  • Septic Tank Installations
  • Telecommunications
  • Thermal Storage Systems
  • Through Deck Fire Breaks
  • Tunneling Operations
  • Underground Steel and Concrete Tanks
  • Valve Pits
  • Waste & Water Treatment Plants


Link-Seals has even been used to seal pipes coming through steel bulkheads in ships.

For the client that has a “movable” or “for hire” water or wastewater treatment plant, the Link-Seal is the best possible solution because it can be removed and refitted in a timely manner.

Typical Applications

1 – Standard Application

Ductile iron, concrete, metal as well as plastic pipes may be hydrostatically sealed within walls to hold up to 20 psig (40 feet of static head).

Steel pipe sealed passing through a cored floor penetration

Steel pipe sealed passing through
a cored floor penetration

Various copper pipe sizes sealed with Link-Seals in water tank

Various copper pipe sizes sealed
with link-Seals in water tank

2 – Below Ground Application

The annular space between carrier pipes passing through casings may be sealed against the entry of water, soil or backfill material.

Gas Valve Pit – Buried under ground

Gas Valve Pit – Buried under ground

3 – Existing Work Application

Previously formed concrete can be core-drilled to the required diameter for the optimum Link-Seal sizing

Core penetration

Core penetration

 HDPE pipes sealed with Link-Seals – cored penetration

HDPE pipes sealed with Link-Seals – cored penetration

Special Applications

1 – Link-Seal in Combination with Century-Line Sleeves

For the total system approach, metal or non-conductive, Century-Line® Sleeves (with water stops) may be ordered with Link-Seal Mechanical Seals to ensure correct positioning and a watertight seal of the installation within poured concrete walls. (The sleeves need to be installed prior to the concrete pour)


2 – Double Link-Seal for oversize penetrations

When the annular space is larger than the expanded thickness of a single Link Seal

Double row method – HDPE pipe sealed with Link-Seals passing through Century-Line sleeves

Double row method – HDPE pipe sealed
with Link-Seals passing through Century-Line sleeves

3 – External Divided Sleeve with Mechanical Link-Seal

To seal a pipe penetration that is already in place


4 – Steel Sleeves with Mechanical Link-Seal

 Link-Seals sealed between steel pipe and steel sleeve

Link-Seals sealed between
steel pipe and steel sleeve


Link-Seals are easy to install. Only one contractor with hand tools is required. Click here to view video of installation

Step 1: Center the pipe, cable or conduit in wall opening or casing. Make sure the pipe will be adequately supported on both ends. Link-Seal® Mechanical Seals are not intended to support the weight of the pipe.


Step 2: Adjust the pressure plates just enough so that links move relatively freely. Connect both ends of belt around the pipe.

Step 3: Check to be sure all bolt heads are facing the installer. Extra slack or sag is normal. Do not remove links if extra slack exists. Note: On smaller diameter pipe, links may need to be stretched.

Step 4: Slide belt assembly into annular space. Ensure that both front and back plates are inside the penetration. For larger size belts, start inserting Link-Seal assembly at the 6 O’clock position and work both sides up toward the 12 O’clock position in the annular space.


Step 5: LS-200 thru. LS-315: Using a hand socket allen head or off-set wrench ONLY, start at 12 O’clock. Working in a clock- wise manner, tighten each bolt. Do not tighten any bolt more than 4 turns at a time until links have been uniformly compressed.

Step 6: Make 2 or 3 more passes at 4 turns per bolt MAXIMUM, tightening all bolts clockwise until all sealing elements “bulge” around all pressure plates. On type 316 stainless steel bolts, hand tighten ONLY – do not use power tools.

Step 7: Installation Complete