CRC RTV (Room Temperature Vulcanizing) Silicone is an all-purpose formula designed for a wide range of sealing, bonding, protecting and waterproofing applications. It is formulated as a heavy-duty industrial gasket sealant.ApplicationsCRC RTV Silicone offers a safe and easy solution to sealing, bonding, protecting and waterproofing materials at room temperature. It is effective for HVAC, electrical, construction, metal working applications. Ideal for filling gaps between mating parts, gearboxes, pumps, motors and gasket sealing.