Abstract: A sealing structure has a sealing device which is a plane seal disposed in an annular groove provided in one of two members and which seals the annular gap between the two members. The sealing device includes a seal member made of a rubber-shaped elastic body and disposed on a high-pressure side and a backup ring made of a resin mounted adjacent to the seal member on a low-pressure side of the seal member. The backup ring has a ring-like shape with ends in which a notch is formed in a part thereof, and the notch extends parallel to the thickness direction of the backup ring, and extends so as to intersect the radial direction of the backup ring. The seal member and the backup ring are disposed between the two members in a state of being pressurized from the two members, respectively.

Abstract: A seal has a ring-like shape and configured to seal off internal space under a pressure of carbon dioxide gas from external space. The seal is a single structure being a combination of a first material and a second material. The first material is superior in heat resistance to the second material. The second material is superior in gas barrier function to the first material.

Abstract: A gasket made of a rubber-like elastic body attached to an attaching groove provided in at least one out of two members to seal a gap between the two members includes a first sealing surface coming into surface contact with a surface of a first member. A second sealing surface comes into surface contact with a surface of a second member. A third sealing surface comes into surface contact with a side surface of the attaching groove, and a pressure receiving groove opened to a side receiving sealing fluid pressure which is on an opposite side of the third sealing surface and provided so as to be parallel to the first sealing surface and the second sealing surface.

Abstract: A gasket having a cross sectional shape longer than it is wide and is prevented from falling over and buckling. The gasket is installed in an installation groove formed in either of two opposite surfaces and having a cross sectional shape that is longer in the depth direction of the groove than it is wide. The gasket has a meandering section meandering in the width direction of the installation groove and also has a rib provided projecting from the inner periphery and/or the outer periphery of the meandering section.

Abstract: A gasket having a cross sectional shape longer than it is wide and is prevented from falling over and buckling. The gasket 1 is installed in an installation groove 2 formed in either of two opposite surfaces and having a cross sectional shape that is longer in the depth direction of the groove than it is wide. The gasket 1 has a meandering section 1a meandering in the width direction of the installation groove 2 and also has a rib 1b provided projecting from the inner periphery 1c and/or the outer periphery 1d of the meandering section 1a.

Abstract: An air-conditioning device includes a control system for saving fuel consumed to drive the device and for enhancing comfortability of passengers at the same time. The air-conditioning device is operated under a cooling mode emphasizing comfortability or under an economy mode emphasizing fuel economy. Under the cooling mode, the device is controlled in a lower temperature range. Under the economy mode, the device is controlled in an intermediate temperature range to secure comfortability when cooling-down is required, and in a higher temperature range to save fuel after the cooling-down has been completed. Information on vehicle speed may be used in the control under the economy mode. The device may be turned off or controlled in a higher temperature range to save fuel, especially when the vehicle comes to a halt.