... CharacteristicsHX-8810 is two-component, neutral-curing, high strength silicone sealant with long shelf life, designed and tested for the construction ... wall on site.StandardsHX-8810 two-component structural silicone sealant meets or exceeds the requirements of the following specification: ... in preparing specifications) Two-Component Fast Curing Structural Silicone Sealant For Curtain Wall Sealing