COST-2118 is two-parts, neutral, room temperature cured silicone sealant for hollow glass. Characteristics 1. COST-2118 is two-parts, neutral, ... room temperature cured silicone sealant for hollow glass,which does not pollute the environment.2. With ... rubber using in sealing cracks.3. No need for coating while use this silicone sealant, there is good adhesion to a large ...