Refrigerant transporting rubber hose

摘要

A refrigerant transporting rubber hose which is capable of reducing the refrigerant permeation amount to a higher extent than earlier while maintaining the practicability of its extruded skin surface and without increasing the volume of the hose nor sacrificing mandrel removability. The hose is of a layered structure at least comprising an inner layer and an outer layer, wherein an inner layer material forming the inner layer contains 60-200 parts by weight of a scale-shape filler and 10-100 parts by weight of carbon black per 100 parts by weight of a rubber material having as small a permeation coefficient against a refrigerant to be transported as possible.