Categories > Pipe penetration sealing

Pipe Through-Wall Seal System Disk Compression Seals


Westatlantic Class pipe seals underground or above ground

Wall pipe sealing - for multiple pipe/conduit through the same opening

Watertight WA-GP pipe seals through drill cored walls or wall sleeve openings seal pipes and conduit through concrete walls. WA-GP pipe and conduit seals are low profile units used for all concrete walls. The compression seal systems are 36 psi seals that requires a very small seating area.

Pipes and conduit with small diameters or large pipes may be sealed with WA-GP disk seals. Split models are available for existing pipes, and may be installed while the pipe is in service.

Fire wall applications requiring fire proof materials may be sealed using silicone disk WA-GP seals in conjunction with fireproofing materials. WA-GP low profile seating profile allows both fireproofing materials and watertight sealing through a wall opening.

Material Specs

  • Seal compression plates are stainless steel for maximum corrosion resistance.
  • EPDM elastomers for water applications, or NBR for oil and gas and Silicone for high temperature applications.
  • Operating pressures to 36 psi (0.25 MPa) (2.5 bar)

WA-GP seals fit all American and International pipe sizes. Inquiry at Westatlantic, we will provide seal models required, opening size and delivered pricing.

WA-GP Models

WA.GP-SR non-split models for single pipe or conduit penetrations.


WA.GP-SR pipe seals, seal pipe penetrations for fractional and small pipe diameters, or larger pipes.

Low profile thickness (only 2 3/4 inches), make them an effective choice for pipe penetrations through manhole walls and thin concrete slaps. WA.GP.SR pipe seals may be used in drill cores or wall sleeves.

Download information data:

WA.GP-SR split split seals for existing pipes.








Split Models provide pipe sealing for an existing pipe or conduit.

The pipe remains in service during the install.


WA.GP-W Multi-Pipe / Multiple Conduit Sealing through the same wall opening.


multi-port-openings-pipe-sealsMulti-port WA-GP-W models or Multi-port WA-GP-WK (split models).

Compression seals, WA.GP-W multiple sealing models may be used for sealing penetrations in new walls. WA.GP.WK (split) models are used for existing pipes.

The only limiting factor on the number of pipes or conduit that may be sealed through the same opening, is the opening size and the total pipe or conduit through the opening required.






WA.GP-W and WA.GP-WK models are 36 psi watertight seals. they provide water-tight, gas-tight, smoke-tight sealing for pipe, cable or conduit through concrete walls.

Seals consists of an elastomer disks and two stainless steel compression plates. They are annular space seals used for steel pipes, PVC, PE, Ductile Iron and power cables. Pressure seal for up to 36 psi (2.5 bars) (80 foot head).


Sample drawings -Pipe sealing more than one pipe through the same opening

Inquiry to Westatlantic 902 455 4455 all pipe sizes may be accommodated

Cut sheet WA-GP-W conduit seals



Download GP-T multi-pipe seal info sheet:

Large annular space seals:

WA.GP-SD seals are used where large annular space between the pipe and wall opening exist, or a small carrier pipe through a large casing exist. They are used to seal an opening when a large flange must pass through a wall which requires an opening larger than normal.


Split model WA-GP-SD.

  • Split Disk-seals for pipes that already exist.
  • 2.5 to 5 bar (36 -72 psi) pressure seals.
  • Multi pipe sealing through same opening, with a large annular space..
  • Sealing for large annular spaces.


Large annular space seals cut sheet.

WA-GP and modular seals with Silicone elements for high temperature conditions: (+230 ° C) / (+446 ° F)

silicone-rubber-compression seals




Modular Pipe Seal Silicone Hi Temperature
Temp withstanding Stainless pressure plates

WA-GP-W compression pipe seals
Silicone temperature withstanding elastomers with stainless pressure plates

WA.GP-W compression seals and Modular Hi-Temp pipe seals with silicone rubber elastomer, for high temperature applications.

Silicone elastomer seals are used for sealing steam pipes or other high temperature piping projects. Silicone pressure seals may be used with fires top materials through the same wall penetration.

WA-GP-W-Silicone watertight seals may be used for single pipe entries or multi pipes through the same core drill or pipe sleeves.


Non-Metallic pipe seals - through wall compression seals

Pipe casing end seals - or Special requirement seals

WA-GP-P disk compression seals are 14 psi seals. WA-GP-P-DL models are 28 psi Seals. They fit pipes from 3 inch up to 120 inch.


Non - Metallic compression seals may be used for non centered pipes by off setting the port location in the seal or have multi port openings for several pipes, cables through the same opening.

When used as end seals the port opening axially accommodates the leg height for the pipe/casing combination.


Application range:  Sealing pressure 0.1 MPa (14.50 psi). WA-GP- P-DL models (double seals) seal against of 29 psi hydronic pressures. May be used up to 120 inch pipe.

Advantages: Pressure sealing for pipes, Conduit, Cables that penetrate a concrete wall. Pressure sealing for end seals on a casing carrier pipe.  Seals against Liquids, Gases and Smoke. Reduces Vibration.

Scope of delivery: Seal elastomer, Non-metallic (Nylon) pressure plates, compression bolting. Seal elastomers may be: EDPM (-30 C to + 90 C) NBR (-20 C to +90 C)

Material: Pressure plates - corrosion resistant stainless steel V2A (AISI 304L); (V4A (AISI 316L) on request). Rubber: EPDM: -30C - +100C, NBR: -20C - + 90C

Tightness: Tight to 0.1MPa – 0.2MPa

Rectangular or square openings - through wall pipe and conduit sealing

WA-GP-WP models, with stainless steel compression plates. The sealing assembly may be a split version for pipes or conduit that already exist. A split version is used when long pulls are involved, for conduit or pipe after that penetrate the wall.

Water tight sealing for multi pipe or conduit clusters.






EDPM, elastomer seals for water applications, NBR elastomer for hydrocarbon applications or Silicone elastomers for heat affected pipes. Sealing to 36 psi (80 ft. head)

  • Seals are designed for all dimensions.
  • Provides watertight tight seals to 36 psi.
  • Prevents migration of liquids, gases and smoke.
  • Reduces noise.
  • Split version fir existing pipes, cables (etc.).
  • Flexibility sealing.
  • Angular deviation of pipe axis from the bore axis may not exceed 2 °.

Contact Westatlantic for with details on the project for correct sizing.

WA-DL.GP Models provide 72 psi sealing (160 foot water head)








Double Disk-Seals for pipes are used when higher pressure seals are required  up to 5bar - 72 psi. (160 foot water head)

The elastomers may be , silicone, NBR or EDPM. The elastomers may be mix to meed field requirements: E.g. one elastomer disk silicone and the other NBR or other combination.

→ → → page 2 of 3 - External wall mount seals - pipe not centered sealing



For ordering Contact us: Westatlantic Tech Corp. 902 455 4455


Multi pipe through walls, wall sleeves, pipe sleeves, core drill holes. Hauff Technik, Integra, multi pipe penetration seals through the same opening. High water head pipe sealing. USA: Texas, TX, Houston, Illinois, IL, North Dakota, ND, Iowa, IA, Ohio, OH, New York, NY, Kentucky, KC, California, CA, Louisiana, LA, Florida, FL. Canada: Ontario, ON; Oakville, Toronto, London, Ottawa, Hamilton. Alberta, AB; Edmonton, Fort McMurray Calgary. British Colombia, BC; Kelowna, Vancouver, Prince Rupert, Kitimat. Saskatchewan, SK; Regina, Saskatoon, Prince Albert, Estevan, Swift Current. Manitoba MB; Winnipeg, Thompson. Quebec, QC; Montreal, Quebec City, Trois-Rieviers, Chebougamau, Sherbrooke. New Brunswick, NB, Nova Scotia, Newfoundland Labrador, NL.