This 9900 sealant waterproof silicone adhesive is a heavy-duty exterior waterproof solution for all outdoor scenarios. Adopting high-grade 9900 silicone formula, this silicon waterproof sealant 9900 owns outstanding flexibility, keeping stable performance under long-term outdoor high and low temperature changes.

It is an all-round waterproof sealant specially designed for roof cracks, wall gaps, window frames, skylight seams, gutter joints and exterior wall repairs. This multipurpose silicone caulk creates a permanent elastic seal and will not crack, shrink or peel over time.

It forms powerful adhesion on concrete, metal, glass, wood, PVC and stone surfaces. Multiple specifications including 500g and 750g as well as Clear, White and Black color options fully meet daily home maintenance and construction sealing demands. The sealant can be stored for a long time with stable quality for reserve and frequent use.