This grease is a special extreme high temperature grease with low oil evaporation and is thickened with a non-melting thickener to allow use at temperatures above the melting point of common greases. It has excellent lubrication over a broad temperature range. Krytox® XHT-BD series greases are nonflammable and chemically inert. Krytox® allows extended lubrication intervals and longer equipment life.
XHT-BDX was also called KDP-4409 when it was first developed. XHT-BDZ was also called KDP-4465 when it was first developed.
Applications: This grease is designed for use where the temperatures are in the 288°C (550°F) range and higher, where there is a danger of melting the standard PTFE thickener. This grease uses a special nonmelting high temperature thickener that also provides extreme pressure properties and works as a solid lubricant if the base oil is depleted. The base oil is an extremely viscous oil that provides good viscosity and lower evaporation at high temperatures. The grease is slightly tacky and will coat the surface and stay in place. The oil in the grease can begin to slowly degrade at temperatures above 329°C (625°F), and this will occur at an increasing rate as temperatures increase. Relubrication could be required at these temperatures to achieve optimum life.
