Newton HydroTank 306 Swell Mastic

HydroTank 306 Swell Mastic is a high-quality, firm, fast-curing, swellable, single-component, polymeric adhesive sealant. The special composition of Newton 306 SwellMastic makes the sealant start to swell when in contact with water (to about 150% 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.