... 450/750V or lower. Si-rubber is used as connection of appliance in moto, metallurgy, electrical power, oil-fields, chemistry industrial, ... 300/500VThe long-time working temperature of cable should be no higher than 60oC."W" type cables have bad wether-proof ... devices and tools(flexible cable,soft cable,rubber cable) General Type Rubber Sheath Soft Cable(flexible cable,soft cable,rubber cable)