Polylok Plastic 4″ Pipe Seal

SKU: 344-1371 Category:


Eliminate grouting around the pipe. Quick and easy conversion to any existing form. Our pipe seals can be used in any application. It’s time to upgrade your product with the Polylok Pipe Seal… your customers will be glad you did.
Ideal for:

  • Septic Tanks
  • Distribution Boxes
  • Drainage Boxes
  • Accommodates 2″, 3″, 4″, SCHD. 40 and corrugated pipes
  • Watertight
  • No grouting
  • Free mandrels with initial order
  • Just tear out the size you need and slide your pipe into the seal
  • Meets ASTM 1227

Polylok Pipe Installation:

  1. Mandrel is cut to 1/8″ less than the wall thickness of the septic tank. Mandrel is then attached with a single 3/8″ carriage bolt
  2. Polylok seal snaps onto the mandrel and is held securely by two friction fit” positioning posts. Form is then closed and is ready to pour and strip
  3. Once on the job site, just tear out the size you need and slide your pipe into the seal
  4. Pipe is then inserted into the seal. No leaks. No grout. It’s that simple


  1. Remove the correct size tear-out on the seal. (TEAR OUT- DO NOT CUT OUT!)
  2. Chamfer the OD of the pipe, removing all burrs, sharp or jagged edges
  3. Apply a minimal amount of grease to the chamfered edge of the pipe
  4. Slide the pipe into the seal
  5. Remember to always backfill properly around and underneath the pipe