Link-Seal® modular seals are considered to be the premier method for permanently sealing pipes of any size passing through walls, floors and ceilings. 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.

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). Electrical or telecommunications cable may be sealed within conduit as they enter vaults or manholes. The annular space between carrier pipes passing through casings may be sealed against the entry of water, soil or backfill material.

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.

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.

For the system approach, metal or non-conductive Century-Line® sleeves with water stops may be ordered with Link-Seal modular seals to ensure correct positioning and a water tight seal of the installation within poured concrete walls. (The sleeves need to be installed prior to the concrete pour) 
Link-Seal modular seals are also available for a wide variety of special applications, temperature extremes, exotic chemical combinations and for “out of round” or non-centered applications. Please contact us to discuss these unusual applications.

Benefits / Features

  • Saves time and money.
  • Link-Seal modular seals install in up to 75% less time compared to lead-oakum joints, hand fitted flashings, mastics or casing boots.
  • Positive hydrostatic seal.
  • Link-Seal modular seals are rated at 20 psig (40 feet of head), which exceeds the performance requirements of most applications.
  • Long seal life.
  • Link-Seal modular seals are designed for use as a permanent seal. Seal elements are specially compounded to resist aging and attack from ozone, sunlight, water and a wide range of chemicals.
  • Maximum protection against corrosion… Corrosion resistant 316 stainless steel fittings (except on T models).
  • Certification/Approvals.
  • Factory Mutual Fire Approvals.
  • Also a wide variety of approvals from various Federal agencies, associations, code groups, laboratories and organizations.
  • ISO Quality Assurance.
  • Link-Seal modular seals are manufactured in an ISO 9001:2000 certified facility.
  • Configure a Link-Seal modular seal to match your application.
  • 16 sizes, color coded EPDM, Nitrile, & Silicone elastomers may be used with various hardware options to match performance characteristics with service conditions.
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Link-Seal Modular Seals can permanently seal pipe penetrations ranging in size from 10mm -3.6m Diameter.

Assembled band of Link Seal 600’s prior to installing & sealing 580mm (OD) Pipe.

Typical Applications

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Century-Line® Model CS Sleeves in Combinantion with “low durometer” EPDM (blue) Link-Seal® Modular Seals

Century-Line® Model CS Sleeves are ideal for poured wall construction. Made of HDPE thermoplastic, they are lightweight and easy to handle. Molded-in waterstop and reinforcing ribs serve to anchor the sleeve in the wall and resist pour forces. Nailer end caps are provided to make placement in forms simple and accurate. Sleeves are available in 16 diameters, up to 25”, and any length. In the event of a field change they can be shortened with ordinary hand tools.

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Pre-cast or Cored Wall Openings in Combination with Nitrile (green) Link-Seal® Modular Seals

Link-Seal® Modular Seals are also commonly installed in cored wall openings or pre-cast openings such as those formed by use of Cell-Cast® Disks for pipe penetration hole forms. See Cell-Cast Disk or contact PSI for more information.

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Model WS Steel Sleeves in Combination with Silicone (grey) Link-Seal® Modular Seals

Model WS Steel Sleeves are made from heavy-wall welded or seamless pipe. A full circle waterstop plate acts as positive water seal and anchor to prevent thrust movement. The 2” collar (water-stop) is continuously welded on both sides. Model WS is available in a wide range of diameters and any length. Sleeves are protected by a coating of red primer. Hot dip galvanizing is available on request

Typical Applications

  • Mechanical Contractors – Interior Piping Systems
  • Floor Sleeves
  • Wall Sleeves
  • Manhole Pipe Entry Seals
  • Waste Treatment Plants
  • Cased Road Crossings
  • Elevator Shafts
  • Power Generating Dams
  • Thermal Storage Systems
  • Fire Protection Wall Penetrations
  • Cased Railroad Crossings
  • Electrical Isolation of Pipes
  • Precast Concrete Pipe Seals
  • Insulated Pipe Seals
  • Dual Containment Seals
  • Marine Applications
  • Noise Dampening
  • Flexible Sign & Pole Supports
  • Electrical Isolation of Pipe Supports for Corrosion Protection
  • Mining
  • Pulp & Paper
  • Decorative Fountains
  • Bank Tube Transfer Systems
  • Pool Contractors
  • Electrical Contractors
  • Marine Applications
  • Waste & Water Treatment
  • Telecommunications
  • Railway Crossings
  • Valve Pits
  • Refrigeration Buildings
  • Overhead Signs
  • Guard Post Assemblies
  • Power Generation Dams
  • Offshore Oil Rigs
  • High Pressure Tank Guards
  • Underground Steel Tanks
  • Centuryline Applications
  • Precast Concrete Manufacturers
  • Perimeter Berm Installations Around Tank Farms
  • Flow Restrictors in Sewer Maintenance
  • Fluid Overflow Devices
  • Noise and Sway Dampener
  • Through Deck Fire Breaks
  • Parking Garage Column Protectors
  • Cable TV Installations
  • Bridge Construction
  • Septic Tank Installations
  • Coal Preparation Plants
  • Pile Driving Operations
  • Flag Pole Installations
  • Driving Contractors
  • Tunneling Operations

Seal & Hardware Options

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Model “S-316” Link-Seal Modular Seal

Description: For chemical processing waste water treatment. EPDM rubber is resistant to most inorganic acids and alkalis, some organic chemicals (acetone, alcohol, ketones)

Color: Black or Blue

Type: Stainless

Seal Element: EPDM (Black), EPDM (Blue)

Pressure Plates: Composite

Bolts & Nuts: 316 Stainless Steel

Temp. Range: -40 to +250F. (-40 to +121C.)*
* = Sustained operation near temperature limits may affect life expectancy.

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Model “OS-316” Link-Seal Modular Seal

Description: Combination of oil-resistant rubber and stainless steel hardware.

Color:Green

Type: Oil Resistant

Seal Element: Nitrile (Green)

Pressure Plates: Composite

Bolts & Nuts: 316 Stainless Steel

Temp. Range: 40 to +210F. (-40 to +99C.)*
* = Sustained operation near temperature limits may affect life expectancy.

 
Model “T” Link-Seal Modular Seal

Description: Silicone rubber is ideal for temperature extremes. “T” model is Factory Mutual approved.

Color: Grey

Type: High/Low Temperature

Seal Element: Silicone (Grey)

Pressure Plates: Steel Zinc Dichromate

Bolts & Nuts: Steel with 2-part Zinc Dichromate & Proprietary Corrosion Inhibiting Coating

Temp. Range: -67 to +400F. (-55 to +204C.)*
*= Sustained operation near temperature limits may affect life expectancy.

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Model “FD/FS” Link-Seal Modular Seal

Double seal for added protection

Color: Grey

Type: Fire Seals

Seal Element: Silicone (Grey)

Pressure Plates: Steel Zinc Dichromate

Bolts & Nuts: Steel with 2-part Zinc Dichromate & Proprietary Corrosion Inhibiting Coating

Temp. Range: -67 to +400F. (-55 to +204C.)*
* = Sustained operation near temperature limits may affect life expectancy.

Specifications

Material Properties of Link-Seal Modular Seal Elements
PROPERTY ASTM METHOD EPDM (EPDM L) NITRILE SILICONE
  Hardness
  (shore A)
D-2240 50 ±5 (40 ±5) 50 ±5 50 ±5
  Tensile  

D-412 1450 psi 1300 psi 860 psi
  Elongation D-412 400% 300% 250%
 Compression
  Set
S-395 15% 22 hrs @ 158ºF (70ºC) 45% 22 hrs @ 212ºF (100ºC) 40% 22 hrs @ 350ºF (177ºC)
  Specific
  Gravity
D-297 1.10 1.15 1.40
Material Properties of Composite Pressure Plates
Property Astm Method Value
  Izod Impact – Notched D-256 2.05 ft-lb/in
  Tensile Strength @ Yield D-638 20,000 psi
  Tensile Strength – Break D-638 20,250 psi
  Flexural Strength @ Yield D-790 30,750 psi
  Flexural Modulus D-790 1,124,000 psi
  Elongation, Break D-638 11.07%
  Specific Gravity D-792 1.38
  Moisture Content 0.18%
Bolt & Nut Specifications
  Standard (Pacific Region):
  Stainless Steel
ANSI Type = 316, Per ASTM F593-95
Tensile Strength = 85,000 psi, average.

Modular/Mechanical Seal and Sleeve Specification

  • Typical Specification 1.0 Penetration Seals
    Use a modular, mechanical seal, consisting of rubber links shaped to continuously fill the annular space between the pipe and the wall opening. Link-Seal® pressure plates shall be molded of glass reinforced nylon. Hardware shall be316 Stainless Steel, Per ASTM F593-95 Tensile Strength = 85,000 psi, average. Coloration shall be throughout elastomer for positive field inspection. Each link shall have permanent identification of the size and manufacturer’s name molded into the pressure plate and sealing element. The Contractor will submit to verify the modular seals are domestically manufactured at a plant with a current ISO-9001:2000 registration. Copy of ISO-9001:2000 registrations shall be a submittal item. PSI-Thunderline/ Link-Seal® Modular Seal as manufactured by Pipeline Seal & Insulator, Inc, Houston, TX, or pre-approved equal.
  • Sleeves and Wall Openings
    • For diameters up to 24.81″ install molded non-metallic high density polyethylene sleeves (HDPE) with integral hollow, molded water-stop ring four inches larger than the outside diameter of the sleeve itself. End caps and reinforcing ribs, domestically manufactured in an approved ISO-9001:2000 facility. Century-Line® Sleeve as manufactured by Pipeline Seal & Insulator, Inc, Houston, TX., or engineered pre-approved equal.
    • For openings from 29.25″ to 64.74″ in diameter, use a modular hole-forming system consisting of interlocking HDPE plastic discs, domestically manufactured in an ISO-9001:2000 facility. The system shall provide a round hole in conformance with Link Seal® Modular Seal sizing data. Cell-Cast® Hole Forming Discs as manufactured by Pipeline Seal & Insulator, Inc, Houston, TX, or engineer pre-approved equal. Consideration of brands other than mentioned above shall be submitted to the Engineer for evaluation at least 10 days prior to bid due date and shall include evidence of a minimum of 25 years of successful in-service application of the mechanical seal, as well as current ISO-9001:2000 registration.     

Warranty

All products are warranted against failure caused by manufacturing defects for a period of one year. Any product found to be so defective and returned within one year from date of shipment will be replaced without charge. The above warranty is made in lieu of, and we disclaim, any and all other warranties, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, and buyer agrees to accept the products without any such warranties. We hereby disclaim any obligation or liability for consequential damages, labor costs or any other claims or liabilities of any kind whatsoever.

Installation Instructions

Click on the links below to download:

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