... rate of elongatio dxcellent durability and recovery. HONGYING-7300 ROAD SILICONE SEALANTPRODUCT FEATURES*One component, neutral, room temperature curing, low modulus ... of concrete road surface.2. Bonding and sealing for non-structural assembling glass, aluminum plastic plate, aluminum products, tile, ceramic products ... NORMSR 1 N 25LM JC/T976-2005 Hongying-7300 road silicone sealant