Castrol Spheerol HTB 2 is a non-melting grease based on bentonite clay thickeners containing high viscosity oils, antioxidants and is resistant to water. Suitable for very temperatures applications up to 200 °C. Suitable for heavy and shock loading capabilities High thermal stability giving an enhanced service life Castrol Spheerol HTB 2 Grease 450g is a non-melting bentone clay based grease suitable for very high temperature applications. Suited for use within a very wide temperature range and especially at elevated temperatures for both industrial and automotive applications. The all-round properties make it suitable for various types of bearings, including temperature peaks up to 140C.