VELOSIT® WS 805

Swellable Thermoplastic Gasket for Segmental Structures

VELOSIT WS 805 is a swellable gasket manufactured from a blend of proprietary thermoplastics and swelling agents compounded to  produce a re-swellable seal of unique swelling ability. VELOSIT WS 805 is used to seal joints between pre-cast segments.

Typical applications:

  • Sealing between pre-cast segments
  • Sealing between potable water pipes
  • Sealing sewage & wastewater pipes
  • Waterproofing of wall/slab joints

Properties:

  • Profile includes 2 protrusions to form double parallel compressible sealing lines
  • 450 % swelling capacity; fully reversible for an unlimited number of cycles
  • High water retention means delayed shrinkage when dry
  • Dimensionally stable; does not wash-out like Bentonite waterstops
  • Delayed swelling; volume increase starts after approx. 2 weeks of contact with water allowing water curing of precast units and/or placing of segments and pipes in wet conditions
  • Swelling pressure resistant to 5 bars (73 psi) hydrostatic water pressures up to 50 m (160 ft.) acc. to EN 12390-8
  • Extremely flexible: easily bent to take the shape of concrete segment

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Technical Data Sheet

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