Hylotyte Red 100 is a synthetic, semi-hardening jointing compound that has excellent gap filling properties. Hylotyte Red 100 is resistant to a wide range of fluids, especially water (including salt water), anti-freeze, and synthetic oils. These properties mean Hylotyte Red 100 is highly effective at sealing pitted or roughly machined surfaces, particularly those in contact with water and anti-freeze. The product has an operating temperature range of -500°C to 1800°C.