Valve packing: Expanding graphite foil braided packing for valves in the high-temperature range: steam, heat transfer oils, acids, alkalis, etc. (limited use with strongly oxidizing media). Further versions: – 1988RS – stainless steel reinforcement – 1988RP – as sealing kit: TA-Luft/VDI2440; MPA-tested (250°C/40bar) Max. pressure with steam: +650°C