Special lubricant for the lubrication of door seals in high-speed trains (ICE, TGV, AVE). The PTFE-containing grease is extremely pressure and vacuum-resistant, compatible with EPDM and silicone seals and offers a very good UV-protection for a long-life functionality in door mechanisms. It is successfully used in door systems by e. g. Knorr-Bremse GmbH Division IFE Automatic.