Description :

HydroTank 306 Swell Mastic is a high-quality, fast-curing, swelling, single-component, polymeric adhesive sealant. The special composition of HydroTank 306 Swell Mastic makes the sealant start to swell when in contact with water (to about 200% of original size). The sealant has high elasticity and high adherence and it develops a strong adhesive tensile strength immediately after application. The first swelling is time delayed which allows HydroTank 306 Swell Mastic to be applied to slightly damp
surfaces. HydroTank 306 Swell Mastic is suitable for bonding HydroTank hydrophilic waterbars to concrete, plastics, ceramics and steel
as well as being a sealant for service protrusions through the structure.

Key Benefits :

• Very high resistance to water pressure
• Delayed swelling – will not swell during the installation process or during the concrete cure
• Swells up to 200% of original size to quickly seal leaks at joints in the structure
• Very resistance to the high alkalinity of concrete
• Maintains very high elasticity and tensile strength, even when swollen
• Age resistant, no embrittlement