Rubber in the form of preformed elements or mouldable compounds not included in other classes for industrial use; rubber reinforced with ceramics or metal not included in other classes, in the form of preformed elements or mouldable compounds for industrial use; linings in the form of preformed elements and slabs of rubber or of rubber reinforced with ceramics or metal, for use in machinery or equipment which are subject to wear; preformed slabs or elements of plastic for industrial purposes; preformed slabs or elements of plastic, reinforced with ceramics or metal for industrial purposes; linings in the form of preformed elements and slabs of plastics or of plastics reinforced with ceramics or metal, for use in machinery or equipment which are subject to wear; flexible hose pipes of rubber, flexible hoses of rubber reinforced with synthetic fabric; non-metallic flexible hoses; non-metallic hose couplings; rubber hoses; insulating coatings made from fused silica and ceramic fibres