Rubber composition for a cover layer of a hydraulic hose, hydraulic hose, and method for producing the hydraulic hose

A hydraulic hose, comprising:

• a tube;
• a first reinforcement layer directly applied on the tube;
• a helical wire reinforcement directly applied on the first reinforcement layer;
• a first insulation layer directly applied on the helical wire reinforcement;
• a second reinforcement layer directly applied on the first insulation layer;
• a second insulation layer directly applied on the second reinforcement layer;
• and
• a cover layer directly applied on the second insulation layer,
• wherein the cover layer comprises a rubber composition comprising ethylene vinyl acetate copolymer (EVA) and ethylene-propylene-diene terpolymer (EPDM) and additives;
• wherein the EPDM comprises a content of ethylene of 51 wt %, a content of propylene of 44.7 wt %, and a content of diene of 4.3 wt %;
• wherein the additives comprise carbon black with a content of around 15 phr, silica with a content of around 20 phr, di-octyl adipate with a content of around 18 phr, aluminium hydroxide with a content of around 124 phr, magnesium hydroxide with a content of around 30 phr, and other chemicals with a content of around 20 phr, and
• wherein the other chemicals comprise zinc oxide, peroxide curative, antioxidant, coagents and processing aids.