Sika Greenstreak #LV1 Leakmaster LV1- Cartridges (LVZ)

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Sika Greenstreak #LV1 Leakmaster LV1- Cartridges (LVZ)

Single Component Water-Swelling Sealant

LEAKMASTER LV-1 is a single component water-swelling sealant with excellent and unique properties. Its development was based on C.I. Kasei's technology and long experience in waterswelling sealants. LEAKMASTER may be applied in locations where conventional solid sealants cannot be easily applied. This includes irregular shaped joints, rough surfaces, odd penetrations, etc. After curing, LEAKMASTER has excellent physical properties. The rubber-like elasticity of the material and expansion characteristics create an effective watertight seal. Easy application, single component material can be used with any standard caulk gun. Adheres to concrete, metal, glass, etc. 

  • Water sealing at joints of in-situ cast concrete
  • Water sealing around H-section steel joints and bars
  • Caulking for water distribution systems
  • Pipe penetrations
  • Irregular joint surfaces
  • Waterproofing work


  • EASY APPLICATION – As a moisture-cure single component water-swelling sealant, standard caulking guns can be used.
  • PHYSICAL PROPERTIES – After curing, LEAKMASTER has better physical properties than those of conventional sealants.
  • EXPANSION – LEAKMASTER expands approximately two times its original volume when exposed to water. It provides excellent water sealing properties while retaining its rubberlike elasticity.
  • ADHESION – Before swelling, LEAKMASTER adheres to various materials such as concrete, metal, glass, etc.

Packaged in 11oz. (320cc) tubes.

WARNING: California's Proposition 65

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