Watertight modular seals

Modular Link Seals For Large Diameter Pipes - Annular seals

WA-LS-GKD modular links, seal pipe penetrations: Steel, Concrete, Cast iron, HDPE, PVC pipes and all pipe sizes.

Modular seal links create a positive seal both inwards and outwards to effective pressure sealing for pipes through concrete walls. Creating a watertight annulus.

up to 5 bar (72 psi) pressure, at temperatures from, (-40 F to + 176 F), -40 ° C to + 80 ° C.

 316L stainless bolts and nuts are standard hardware. The seal is placed in the annular space between the interior diameter of the wall opening and the pipe.

By tightening the bolts, the elastomer is compressed and expands between the pressure plates. The expanding elements provide a watertight and gas tight seal.


New features include a bolt tight confirmation window that advises installers when optimum torque is set on the bolt.

No under tightened links that may cause leaks.




Nuts are embeded in the compression plates which is a new and effective no part lost feature.




See seal link sizing charts for pipe through core drill walls

Watertight solutions for Water treatment plant pipe systems, sewage storage tunnels, manhole hole connector pipes, under ground tunnels, foundation structures. No leaks.

Pipe seals for all American and International diameter pipes.

  • Nuts are molded into the pressure plate, no lost parts at the job site.
  • Optimum tightness confirmation at a glance.

Watertight solutions for pipe passage through concrete walls.


American and International Pipe Sizes

Large Pipe diameter series:

Optimized compression bolts - nuts are embedded in the pressure plates.

Tight up to 72 psi (5 bar) ( Lloyd register).

"Yellow window indicators" - "Safe" - "Watertight"

Seal elastomers may be EDPM or NBR, bolting hardware is 316L stainless steel.

Modular Seal Links Install Guide

Modular Seal Cut Sheets Introduction

Most effective modular seals

Install guide Picture install guide

Modular Pipe Seals Manual

Modular Seal links French-Canada install manual

Modular Seal links WA units

Leaking link seals "Repair"

Modular seal sizing Chart

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Modular Seals for large Pipe diameters 500 series Seal annular space 62 - 71.5mm / 48 inch (1220mm) diameter pipes

Modular Seals for large Pipe diameters 650 series Seal annular space 77mm-84mm / 78 inch (2000mm) diameter pipes

Modular Seals for large Pipe diameters 615 series Seal annular space 90-98 mm / 118 inch (3000mm)diameter pipes

Modular seals with NBR rubber links for oil and gas applications


Modular seals with oil and gas NBR rubber and 316L stainless steel nuts and bolts. NBR rubber elastomers provide endurance, isolation and safety for oil and gas steel pipes.

72 psi seals with corrosion protection 316L bolts and nuts. Modular seals with visual confirmation of tightness.

Large-diameter pipe sealing specialized for refinery and oil and gas handling facilities, adding safety and long life.
Visible torque indicators - insure security of the installation.

  • Integrated inspection window - accurate installation confirmation.
  • No waiting time between tightening.
  • No time consuming repeated retightening.

Pipe through wall component systems, consist of integrated assembly of wall sleeves - pipe sleeves - modular seals.

DISC SEALS for multi-pipe sealing WA-GP units: READ MORE


Seal more than one pipe through the same core. Watertight up to 36 psi of pressing water..

For pricing Contact Westatlantic Tech Corp. USA and Canada.


Compression Disc - pipe seals WA-GP units watertight connection for pipe through concrete walls. Disc seals only require a very low seating area. Ideal for watertight pipe connections through manhole walls.

pipe-seals-disk-compressionCompression disc seals for through wall conduit and pipes. Including a split versions, for pipes that are already in place.

Compression disc seal sizing is determined based on the number of pipes or conduit through the same opening. Hole size is the determining factor for the number of pipes that can be sealed using multiple disk compression seals.

Compression disc pipe sealing is used  for multiple pipes through the same opening, large annular spaces, holes or core holes too small for other types of pipe seals, when higher pressure seals are required. Eccentric compression disk seals are used for pipes that are off center through a pipe sleeve or drill core.

PUDDLE FLANGES: WA-PF units provide Waterstop pipe sealing. They are cast in a wall around a pipe through a foundation wall, floor slabs, pools, Ice rink concrete slabs. The units prevent water infiltration along a pipe through the concrete.






EDPM puddle flanges provide waterstops when a continuous pipe runs through the wall.




Wall Penetration Seals: Westatlantic Tech Corp. 902 455 4455


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