Abstract: The disclosure relates to tube or hose (1, 10) including a plurality of coaxially arranged sheaths (2, 3, 4, 5, 6, 7, 8, 12, 13) that are bonded together. The multilayered tube or hose (1, 10) includes at least: a force bearing sheath (2), an abrasion resistant sheath (12), and an adhesion promoting layer (13) that is arranged between the force bearing sheath (2) and the abrasion resistant sheath (12) and that increases the bonding force between said force bearing sheath (2) and said abrasion resistant sheath (12). The adhesion promoting layer (13) includes a mixture of 55 to 85 parts of acrylonitrile butadiene rubber, 5 to 25 parts of styrene butadiene rubber, 5 to 25 parts of ethylene propylene diene monomer, 75 to 125 parts of carbon black N990, 30 to 90 parts of calcium magnesium carbonate, 5 to 15 parts of zinc oxide, 5 to 25 parts of magnesium-aluminium hydroxycarbonate, 20 to 95 parts of resin package blend, 2 to 10 parts of N-(1.

Abstract: The disclosure relates to a multilayered hose (1, 10) with a plurality of coaxially arranged sheaths (2, 3, 4, 5, 6, 7, 8, 12, 13). The multilayered hose (1, 10) includes at least a force bearing sheath (2, 6), a diffusion reducing sheath (4), and an adhesion promoting layer (3, 5) that is arranged between the force bearing sheath (2, 6) and the diffusion reducing sheath (4) and that increases the bonding force between said force bearing sheath (2, 6) and said diffusion reducing sheath (4). The adhesion promoting layer (3, 5) includes a mixture of: 65 to 85 parts of acrylonitrile butadiene rubber, 15 to 35 parts of styrene butadiene rubber, 75 to 125 parts of carbon black N990, 30 to 100 parts of calcium magnesium carbonate, 5 to 15 parts of zinc oxide, 5 to 20 parts of magnesium-aluminium hydroxycarbonate, 25 to 125 parts of resin package blend, 2 to 10 parts of N-(1.3-dimethylbutyl)-N?-phenyl-p-phenylendiamine, 5 to 15 parts of triallyl cyanurate, and 0.5 to 5 parts of a vulcanizing agent.

Abstract: A hose extrusion mandrel for manufacturing rubber hoses includes: a solid thermoplastic, elongate core; and a rubber compound outer layer covering a surface of the elongate core. A ratio between a diameter of the core and a thickness of the rubber compound layer may be between 8 and 11.

Abstract: A rubber composition for a cover layer of a hydraulic hose includes: ethylene vinyl acetate copolymer (EVA); and ethylene-propylene-diene terpolymer (EPDM). In an embodiment, the composition includes ethylene vinyl acetate copolymer (EVA) and ethylene-propylene-diene terpolymer (EPDM) and additives. The additives may include 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. The other chemicals may include zinc oxide, peroxide curative, antioxidant, coagents and processing aids.

Abstract: A hose extrusion mandrel for manufacturing rubber hoses includes: a solid thermoplastic, elongate core; and a rubber compound outer layer covering a surface of the elongate core. A ratio between a diameter of the core and a thickness of the rubber compound layer may be between 8 and 11.

Abstract: A halogen-free, fire resistant rubber composition for a fire resistant hose includes: 100 parts by weight of elastomer having a blend of: 60 to 70 parts of ethylene vinylacetate elastomer (EVM), a vinylacetate content of EVM being in the range from 60 to 70% by weight; 40 to 30 parts of terpolymer of ethylene, propylene, and a diene elastomer (EPDM), an ethylene content of EPDM being in the range from 30 to 40% by weight and a propylene content of EPDM being from 60 to 70% by weight; at least one fire retardant ingredient; and at least one vulcanizing agent. The vulcanizing agent is a peroxide curative.

Abstract: A rubber composition for a cover layer of a hydraulic hose includes: ethylene vinyl acetate copolymer (EVA); and ethylene-propylene-diene terpolymer (EPDM). In an embodiment, the composition includes ethylene vinyl acetate copolymer (EVA) and ethylene-propylene-diene terpolymer (EPDM) and additives. The additives may include 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. The other chemicals may include zinc oxide, peroxide curative, antioxidant, coagents and processing aids.

Abstract: A halogen-free, fire resistant rubber composition for a fire resistant hose includes: 100 parts by weight of elastomer having a blend of: 60 to 70 parts of ethylene vinylacetate elastomer (EVM), a vinylacetate content of EVM being in the range from 60 to 70% by weight; 40 to 30 parts of terpolymer of ethylene, propylene, and a diene elastomer (EPDM), an ethylene content of EPDM being in the range from 30 to 40% by weight and a propylene content of EPDM being from 60 to 70% by weight; at least one fire retardant ingredient; and at least one vulcanizing agent. The vulcanizing agent is a peroxide curative.