| 摘要 |
Hoses are disclosed for transporting refrigerant media and a 1,1,1,2-tetrafluoroethane gas in particular. An inner tube is formed of a rubber composition comprising a selected ethylene-propylene-diene rubber and having a specified permeation limit of the gas. Disposed around the inner tube are a reinforcing layer and then an outer cover. The resulting hose is highly impermeable to gas and to water, sufficiently resistant to heat and fully free from maintenance. |
