Gaskets for gas supply - Part 6: Gasket material based on fibres, graphite or polytetrafluoroethylene (PTFE) for gas valves, gas appliances and gas mains
Gaskets for gas supply - Part 6: Gasket material based on fibres, graphite or polytetrafluoroethylene (PTFE) for gas valves, gas appliances and gas mains— 12 стр.