Abstract: A resin connector having: a generally cylindrical housing having a first end that is adapted to be inserted into a hose and constitutes an insert section and a second end that is adapted to house a male member to be engaged and constitutes a housing section; and a pair of first and second O-rings being mounted on an inner surface of the housing section of the housing, the first O-ring being disposed proximal to the insert section, and the second O-ring being disposed distal from the inset section, the housing being made of a cured resin composition satisfying the following conditions (A), (B) and (C), and the first O-ring being made of an elastomer satisfying the following condition (D): (A) the following condition (al) or (a2): (a1) a helium permeability at 80° C. is less than or equal to 5×10−10 cm3·cm/cm2·sec·cm-Hg; or (a2) a methanol permeability at 60° C. is less than or equal to 5 mg·mm/cm2/day; (B) a water permeability at 80° C.

Abstract: A polyamide-vibration insulating rubber composite body which can be produced in a simple manner by combining a polyamide part with a vibration insulating rubber part without the use of an adhesive.

Abstract: A peroxide cure system rubber composition comprises EPDM having a high iodine value and an appropriate ethylene proportion, and preferably at least quinoline as an antioxidant, and is particularly suitable for use in making a hose in a cooling system for an automobile engine. The hose is highly resistant to hot air aging and cracking, though the composition does not contain zinc.

Abstract: A hydrogen fuel hose having a wall composed of an inner resin layer, a thin metal layer and an outer resin layer. The inner resin layer includes at least a layer of low gas permeability and may further include a layer of low water permeability surrounded by the layer of low gas permeability. The hose may have a corrugated wall portion. The hose is suited for use as a hydrogen fuel hose for a fuel-cell vehicle because of its excellent hydrogen gas impermeability, resistance to embrittlement by hydrogen and hose flexibility.

Abstract: A rubber composition which can achieve superior adhesion force between it and a material to be adhered without a coating of an adhesive. The rubber composition includes the following components (A) to (D): (A) a rubber composed of at least one of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer, (B) a peroxide vulcanizing agent, (C) a resorcinol-based compound, and (D) a melamine resin.

Abstract: A hydrogen fuel hose having a wall composed of an inner resin layer, a thin metal layer and an outer resin layer. The inner resin layer includes at least a layer of low gas permeability and may further include a layer of low water permeability surrounded by the layer of low gas permeability. The hose may have a corrugated wall portion. The hose is suited for use as a hydrogen fuel hose for a fuel-cell vehicle because of its excellent hydrogen gas impermeability, resistance to embrittlement by hydrogen and hose flexibility.

Abstract: A hose for transporting carbon dioxide refrigerant has a wall formed by a plurality of layers, in which at least one metallic layer impermeable to carbon dioxide is positioned between a radially inner layer and a radially outer layer in its wall. The impermeable layer is a metallic layer formed by vapor deposition, or a laminated layer of at least one resin film and at least one metallic layer formed by vapor deposition. The hose is highly impermeable to carbon dioxide refrigerant, and maintains this impermeability with a high degree of reliability even when the hose is stretched.

Abstract: A hose of impermeability has a wall corrugated along at least a part of its length, and formed by an inner thin resin layer, a laminated layer including a metal film, or a layer formed by a metal film, and an outer thin resin layer. It has a very high fluid impermeability owing to its wall layer including or formed by a metal film, and is also very flexible, capable of absorbing vibration, light in weight and strong. A tubular inner thin resin layer is formed by extrusion as the innermost layer of a multi-layered hose wall, and a laminated tape including a metal film, or simply a metal film is spirally wound or longitudinally lapped about the inner resin layer. An outer thin resin layer is formed about a layer formed by the laminated tape, or metal film, and the whole is at least partly corrugated. Alternatively, corrugation is done before an outer thin resin layer is formed by electrostatic powder coating.

Abstract: A rubber composition comprising: (A) at least one copolymer ingredient selected from the group consisting of ethylene/&agr;-olefin copolymer rubber and ethylene/&agr;-olefin/unconjugated diene copolymer rubber, (B) nickel diisobutyldithiocarbamate, and (C) carbon black, and not containing any compound having zinc; a vulcanized rubber composition obtained by vulcanizing the rubber composition; and a heat-resistant rubber product using the vulcanized rubber composition.