Model Specifications - InstaGrout The statement below may be inserted into a customer specification to help maintain engineering standards and ensure work integrity. The approved enclosure/electrical equipment pad opening sealant shall be Polywater® InstaGrout™ Sealant. The base sealant shall flow and self-level to create a strong cross-linked polymer matrix barrier to seal out water, gases and rodents. The base sealant shall be a closed cell foam structure with compression strength >70 psi (ASTM D1621) and dielectric strength >60 V/mil (ASTM D149). Base sealant shall block 1-foot water-head pressure continuous. Base sealant shall be compatible with cable jacket materials. Base sealant shall be chemically resistant to gasoline, oils, dilute acids and bases, and most unsaturated hydrocarbons. Base sealant shall withstand direct sunlight with no decrease in functionality. Base sealant shall have excellent adhesion to plastics, PVC, HDPE, metals, copper, aluminum, wood, fiberglass, polymer concrete and concrete. Base sealant shall withstand freeze/thaw cycles without loss of adhesion. Base sealant shall not propagate cracks or crumble when cut or drilled to allow service change-outs.