FIELD: mechanical engineering; storage of liquids. SUBSTANCE: proposed invention relates to double-layer cover gaskets able to pass gases and to covers used with such gaskets. Cover gasket has disk-shaped interconnected upper and lower layers. Lower layer adjoins reservoir opening closed by cover with like gasket and is made of water-repellent material permeable to gas. Upper layer is made of elastomer to provide passing of gases at any turning effort applied to cover with use of sealing gastight gasket. Upper surface of this layer has at least one channel passing along surface, and space holes communicating with indicated channel and with lower layer. Lower layer can be made of polyolefin material. Reservoir-to-cover connection unit consists of reservoir proper and cover and gasket of design described above placed in between. Upper layer of gasket is made of polyolefin featuring limited degree of deformation at torque required for closing the reservoir opening and preventing liquid flow applied to the layer. At least one channel of upper layer of gasket is open at edge of cover when cover is installed on reservoir opening. EFFECT: enhanced storage of liquids. 12 cl, 9 dwg
