Gaskets for gas supply - Part 6: Gasket materials based on synthetic fibres, graphite or polytetrafluoroethylen (PTFE) for gas valves, gas appliances and gas mains— 6 стр.
Gaskets for gas supply - Part 6: Gasket materials based on fibres, graphite or polytetrafluoroethylene (PTFE) for gas valves, gas appliances and gas mains— 14 стр.