CEFR Marine rubber sheathed cable is a cable specially designed for use in Marine electrical systems with a rubber sheath to protect the cable from physical damage and chemical corrosion. CEFR is the type of cable that represents the specific specifications and performance of the cable.CEFR Marine rubber sheathed cable features include:1. Oil resistance: the rubber sheath has good oil resistance and can cope with oil pollution that may exist in the ship environment.