High temperature lubrication: Carrying the range beyond Oils and Greases

The lubrication of equipment operating under very high temperatures has for many years presented a serious problem to industry. Considerable thought has been given to the design of rubbing parts to enable them to function with efficient lubrication and sometimes without any lubricant. This has been made necessary, in the past, by the fact that there has been no lubricant suitable for temperatures beyond the range of oils and greases. There are various fillers which offer heat resistance, but they do not provide efficient lubrication, they may enable equipment to work but only at the cost of wear. The manufacturer has turned his attention to heat resisting hardened steels which will resist spalling and undue wear, but cost often militates against the widespread use of such materials.