Crocodile Expanding Water-stop

April 29, 2018 admin 0 Comments

Water Activated Expanding Rubber

  • Great for sealing off concrete joints or gaps between pipes and walls to stop water leaking
  • When activated with water, Crocodile Expanding Waterstop will expanded to seal off leaks
  • Bentonite and butyl rubber
  • Expands to stop airflow and permanently seal off small leaking joints or gaps
  • Light and flexible; can be used in both hot and cold weather
  • Easy to use and saves time

L 25 mm x W 20 mm x H 5 m (Less than 20 cm Concrete)
L 20 mm x W 15 mm x H 6 m (More than 20 cm Concrete)
L 20 mm x W 21 mm x H 7 m (Installing pipe through wall)



Crocodile Waterstop-RX is a flexible strip concrete construction joint waterstopthat provides a positive seal by expanding upon contact with water. Crocodile Waterstop-RX is an active waterstop that functionally replaces conventional passive PVC dumbbell waterstops. It is designed for both continuous and intermittent hydrostatic conditions and has been successfully tested to resist 231 feet (70 m) of hydrostatic pressure. The key to the effectiveness of Crocodile Waterstop-RX is its 75% sodium bentonite content which provides superior expansion to seal cracks and fill small voids. Proven effective on projects worldwide for over 20 years, It is a reliable and cost-effective solution to preventing water infiltration through concrete joints.
Crocodile Waterstop-RX is certified by NSF International to conform with the requirements of NSF Standard 61 – Drinking Water System Components – Health Effects, thus certifying that the product can be used in potable water storage structures. Installation is fast and easy. Simply adhere Crocodile Waterstop-RX to the concrete, steel, or PVC (pipes) with WB-Adhesive and then pour the concrete.
Crocodile Waterstop-RX reduces labor costs by eliminating the workmanship rigors of welding the joints or split-forming associated with traditional PVC dumbbell type waterstops. It can also be used to provide protection when conventional PVC waterstop has been installed without the joints welded.
Crocodile Waterstop-RX offers a low cost opportunity to enhance the performance of a sound external waterproofing system, by sealing the areas of highest probability of water infiltration through the concrete, andshould the refore be implemented as part of the waterproofing design.

  • Construction joints in foundation slabs or below grade walls.
  • Around pipes, steel H-piles, and other penetrations.
  • New-to-existing concrete work.
  • Septic tanks, sanitary and storm sewer manholes.
  • Utility and burial vaults.
  • Box culverts.
  • Potable water tanks.


  • Do not expose to the rain or water before 2 hours of application
  • -Not recommended for horizontal application where water may immerse or below grade applications

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