CETCO RX-101 Volclay Waterstop Expanding Concrete Joint Waterstop

Item No. 26625
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CETCO RX-101 Volclay Waterstop Expanding Concrete Joint Waterstop is a reliable, cost-effective means to stop water infiltration through concrete cold joints. It can also be used around pipe and structural penetrations.


  • Flexible, provides a positive seal by expanding upon contact with water
  • Functionally replaces conventional passive PVC dumbbell waterstops
  • Fast and easy installation
  • Swells and forms a positive seal
  • No Special Transition Parts – Waterstop-RX does not require special cross, corner, or “L” parts to transition from horizontal to vertical
  • Non-toxic and requires no special handling
  • Can be install without chipping or saw-cutting existing concrete
  • Designed for vertical and horizontal concrete 8" thick or greater

Typical Applications

  • 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


Product NumberRX-101
Size1" x 3/4"
LN FT/Box100 Lin ft. (30.4m)