Black, for antistatic applications. The hoses are made of an ''Antistatic Compound'', which contains only pure PTFE and the finest carbon dust. The chemical resistance of PTFE is thus retained as far as possible. Exceptions are media with a high reactivity to coal. The working resistance is at least 106 Ohm/m. For pure PTFE this value is 1018, temperature resistant from -200°C to +260°C.