The sealing method is for sealing between: a rear surface of a first component which is a composite material containing a reinforcing fiber and a resin; and a front surface of a second component facing the rear surface of the first component. The sealing method includes: a step (ST03) in which a molded body is placed at a corner between the front surface and an end surface of the first component, with a first sealing material interposed therebetween; and a step (ST06) in which a second sealing material is applied from the molded body up to the front surface of the second component.

A flange sealing system includes two bodies that each have a respective flat surface and are interconnected so that the surfaces face one another. At least one of the bodies has a groove with parallel side walls recessed into the flat surface. An elastic profile with an H-shaped cross-section is arranged in the groove in such a way that at least a part of the vertical regions of the elastic profile is arranged parallel to the side walls of the groove. In at least one portion of the space between the vertical regions of the elastic profile, a cured liquid is arranged in such a way that the profile is adhesively connected to the groove in the region of the base surface of the groove. The cured liquid is elastic.

A waterproof gasket structure and its gasket shaping mold are provided. The gasket shaping mold includes a mold seat having a surface, and plural mold cavity ring-grooves concavely formed on the surface, each having two corresponding longitudinal groove sections. At least one longitudinal groove section has one or more inwardly bent wavy bent portions, and plural turning round corner portions are formed at the junction between the longitudinal groove section and the wavy bent portion, and each turning round corner portion has a radius equal to or greater than 6 mm. Therefore, the middle of the mold cavity ring-groove can be utilized effectively, and plural waterproof gaskets can be manufactured by the same gasket shaping mold while achieving the effects of reducing the mold volume, improving the manufacturing efficiency, and saving the manufacturing cost.

One embodiment of the present invention relates to an elastomer composition, a sealing material, or a method for producing a sealing material, in which the elastomer composition includes a crosslinkable fluoroelastomer (A1) that is other than a perfluoroelastomer and has a fluorine content of 69% by mass or more and a crosslinkable fluoroelastomer (A2) that is other than a perfluoroelastomer and has a fluorine content in a range of 66 to 68% by mass.

The subject of the present invention relates to a sealing gasket that has a section formed like a barrel, that does not have mold joint line, ejector marks, burrs, offset and runner entry marks for perfect sealing, that can be easily molded and can be removed from the mold without a core in order to be used in all required areas where sealing is required and the application surfaces are suitable for the structure of the gasket.

Systems and processes for forming seals. The seals have graphene embedded in the seal. The graphene-embedded seals exhibit improved wear resistance over seals without graphene.

A manufacturing method of a gasket that can stabilize the size and shape of the gasket without a mold. The manufacturing method of the gasket includes the steps of discharging liquid rubber onto a base member using a discharge device, and forming a rubber gasket on the base member by curing the discharged liquid rubber. The discharge device includes a valve body which opens and closes a flow channel through which the liquid rubber flows and a discharge port from which droplets of the liquid rubber are intermittently discharged as the valve body opens and closes a valve. The discharge device is a contactless-type discharge device used in a state in which the discharge port is not in contact with the base member.

A method of shaping a gasket on a separator without causing destruction and damage. A fuel battery separator gasket is shaped via a shaping of a sticking agent and a transfer of the sticking agent. During the shaping, the sticking agent to be the gasket is shaped on a flexible substrate having flexibility. During the transfer, the sticking agent shaped on the flexible substrate is transferred to one of a pair of separators facing each other with an electrolyte membrane provided in a fuel battery cell being interposed therebetween and each having a bead forming a flow path of fluid between the bead and the electrolyte membrane in close contact with the electrolyte membrane to shape the gasket.

A method for manufacturing a sealing device to improve the positioning accuracy of a parting operation while also improving manufacturing efficiency. The method includes molding an elastomeric cylindrical molded body (100a) with a plurality of cylindrical surface portions (130) and a plurality of annular outer peripheral convex portions (110) arranged alternately on an outer peripheral side thereof, and further provided with a plurality of cylindrical surface portions and a plurality of annular inner peripheral convex portions arranged alternately on an inner peripheral side thereof. The cylindrical surface portions on the outer peripheral side and the cylindrical surface portions on the inner peripheral side, as well as the outer peripheral convex portions and the inner peripheral convex portions are provided so as to be at the same positions in the axial direction.

Systems and processes for forming seals. The seals have graphene embedded in the seal. The graphene-embedded seals exhibit improved wear resistance over seals without graphene.