Categories > Pipe penetration sealing

Pipe - Through Wall Sealing Systems


Waterproof Seals Multiple or Single Pipes

Pipe through wall - water tight sealing: WA-GP disc pipe seals fill and seal the annular space between a pipe and wall opening. WA-GP disc seals are narrow seals requiring only 3 1/2 inches of seating space. Disc seals are 36 psi pressing water seals (2.5 bar) - 80 ft. water column.

Single or multi pipe through the same opening are sealed with WA-GP seals. A split version wraps around existing pipes or conduit to make a water tight seal for pipes already installed.

For firewall applications WA-GP disc seals with high temperature silicone elastomer is used with additional fireproof fills to meet required ratings.

Material Specs

  • WA-disc seal compression plate materials are stainless steel for maximum corrosion protection.
  • 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 disc seals fit all American and International pipe sizes. Inquiry at

Westatlantic Tech Corp.

WA-GP disc pipe seals

WA.GP-SR non-split units seal the annular space around single pipes or conduit.


WA.GP-SR waterproof fractional diameter pipes, they seal low curvature pipe features.

Large diameter pipes are sealed with WA-GP-Seals. Using disc seals as end seals for casing annular space keeps the chamber dry.


manhole-pipe-sealsWA-GP-SR low profile units are used for watertight penetrations of larger diameter pipes through round manholes.

The seating area required is 3 1/2" which allows pipe sealing through thin wall manholes.

The round shape of a manhole reduces the seating space available for a seal.

Manholes with 6" or 8" walls may have less than 4 inches of seating space available.

WA-GP seals only require 3 1/2 inch of seating space for a watertight pipe entry.

Because of the low profile, a WA-GP pipe seal may have the compression nuts inside the wall for easy access.

Download information data:

WA.GP-W split units seal the annular space around existing pipes.


They wrap around the pipe and mechanically expand to seal the annular space around the pipe and opening. Split disc seals may be placed while the pipe remands in service.






WA.GP-W Multi-Pipe and Conduit seals waterproof multi pipes through the same wall opening.


Compression pipe seals, WA.GP-W
seal pipe/conduit penetrations in new walls.



The number of pipes or conduit that may be sealed through the same opening, is only limited by the opening size.

Download cut sheet multi pipe seals

WA.GP.WK split units are used for sealing existing multiple pipe or conduit that are already through the wall. The split disc allows the unit to wrap around several pipes for complete waterproof penetrations.


They provide water, gas and smoke-tight sealing.



Seals consists of an elastomer disks and two stainless steel compression plates. Disc seals may be used for steel pipes, PVC, PE, Ductile and power cables. They provide pressure sealing up to 36 psi (2.5 bars) (80 foot head).


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

Cut sheet WA-GP-W conduit seals



Download WA - GP-T multi-pipe seal info sheet:

Large annular space Pipe seals:

WA.GP-SD units are pipe seals for large annular space conditions where other seals cannot span the space between a pipe and the opening.


- When a large pipe flange must pass through a wall that requires a large opening.
- Smaller diameter carrier pipe in a large casing.
- Where large annular spaces exist for any reason.


WA-GP-SD Split units.

  • WA - GP-SD-split units are available for pipes that already exist and a large annular space opening exist.
  • 2.5 to 5 bar (36 -72 psi) pressure seals.
  • Multi pipes through same opening with a large annular space.
  • Sealing for large annular spaces.




- EDPM, NBR or Silicone elastomer
- Compression plates 304L stainless or 316L stainless


Large annular space seals cut sheet.

For WA-GP disc seals for pipe penetrations:

- Pipes not centered in the opening.
- Wall waterproof liner and pipe seals.
- Casing spacer end seals.
- Seals adapted for water hammer.
- Deep seated long bolt seals.


Modular seal links with Silicone element rubber are high temperature ("T") units up to: (+230 ° C) / (+446 ° F).

Compression plates are stainless steel in for "T" seal links.

silicone-rubber-compression seals




Modular Pipe Seal Silicone Hi Temperature
Temp withstanding Stainless pressure plates

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

Composite Disc seals, Non-Metallic: with EDPM or Oil resistant NBR rubber seals. Mechanical compression seals for specific conditions were metallic seals cannot be used.


- Pipe through wall seals
- Casing end seals

WA-GP-P disk compression seals are special requirement 14.5 psi seals. (33 ft waterhead seals) Double disc WA-GP-P-DL models are 28 psi seals (64 ft waterhead 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 pipe port location in the seal. Multi port openings for several pipes and conduit through the same opening, may also be supplied. No metal parts, non-conductive total isolation.

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


- Pressure sealing for pipes, Conduit, Cables through walls.
- Pressure sealing for end seals on a casing carrier pipe.
- Seals against liquids, gases and smoke.
- Reduces Vibration in the system..

Scope of delivery:

- Seal elastomer (Seal elastomers may be: EDPM (-30 C to + 90 C) NBR (-20 C to +90 C)
- Non-metallic (Nylon) pressure plates
- Non-metallic

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

- Water/Gas tight

Rectangular or square openings - pipe and conduit through wall sealing

WA-GP-WP units have 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.

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 (80ft water 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 units have increased rubber service areas that provide 72 psi sealing (160 foot water head)








Double Disc-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.

Complete list of WA-GP- disk compression seals

Continue to "pipe-penetration-sealing- page two"



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


watertight seals, Multi pipe through walls, disc seals, wall sleeves, pipe sleeves, core drill holes, 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.