A sheet member includes a pair of main surfaces opposing each other. A maximum thickness that is a maximum interval between the pair of main surfaces is 40 μm or more and 450 μm or less. The sheet member has a region in which a plurality of coherent pattern lines appear when viewed from a direction facing the pair of main surfaces, the plurality of coherent pattern lines being arranged at intervals in a direction in which one edge portion and another edge portion opposing the one edge portion oppose each other, and a pair in the plurality of coherent pattern lines adjacent to each other do not intersect.

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media and highly pure rubbers obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom.

A seal is disclosed having a pair of side walls, a base extending between the side walls, a first concave surface extending inwardly from one of the side walls, a second concave surface extending inwardly from the other side wall, and a convex surface extending between the first concave and second concave surface to form a rounded peak having an apex. The seal has a seal width defined between the seal side walls, and a seal height defined between the apex of the rounded peak and the base. The width is at least twice the height of the seal. The seal is located in a channel recess of a first component opposite a second component to seal between the first component and the second component, the channel recess having a floor and a height defined between the floor and a surface of the first component in which the channel recess is formed.

A sealing device for a wheel hub unit configured to form a static seal to protect the wheel hub unit from environmental contaminants. The sealing device including a shield that is coupled to a collar of the wheel hub unit. The sealing device having a cylindrical lateral mounting wall pressed into the collar, an annular seat with a blind end formed in the cylindrical lateral wall, and a sealing gasket positioned, inside the seat and compressed radially between the groove and the collar, and formed by a sealing compound to allow the formation of a bead against the cylindrical lateral wall in a transport and/or assembly configuration of the sealing device. The bead being movable into the seat by a scraping action exerted by the collar during the assembly of the shield.

A photocurable composition is provided. A cured product formed by curing the photocurable composition has reworkability and excellent heat resistance while having flexibility. The photocurable composition includes a telechelic acrylic polymer having an acryloyl group at both ends; a polyfunctional acrylic polymer having acryloyl groups; a monofunctional acrylic monomer; and a fumed silica including at least one of a hydrophilic fumed silica or a fumed silica having a polar group. The photocurable composition has a Martens hardness of 0.07 to 0.75 N/mm.sup.2, where the Martens hardness is a hardness after the photocurable composition is cured.

In accordance with at least one aspect of this disclosure, a fuel seal for an aircraft fuel system includes a seal ring of a metallic material configured to retain a shape of the seal ring under compression, and a coating of elastomeric material, over molded onto the seal ring and configured to conform to a shape of a sealing surface. In embodiments, the seal ring and coating can be configured to provide drop-tight sealing at a temperature of at least 400 degrees F. In certain embodiments, the seal ring and coating can be configured to seal one or more fuel system components of an aircraft fuel system.

A selectively densified composite sealant includes a porous layer having a first major surface and an opposing second major surface. The porous layer is formed of a porous membrane and having alternating first densified portions and second undensified portions that form respective valleys and peaks in the porous layer. An elastomeric layer is disposed on the first major planar surface of the porous layer and is formed of an elastomeric material that fills the valleys between the undensified portions.

The present application relates to the field of electronic product heat dissipation component and in particular, relates to a graphene thermally conductive gasket edge-wrapped process and an edge-wrapped graphene thermally conductive gasket. The process steps are: coating a layer of adhesive on the first layer of graphene film, placing the second layer of graphene film on the first layer of graphene film, repeating stacking to the target height, obtaining a graphene film block, punching a plurality of through holes penetrating two surfaces of the graphene film block; threading the carbon fiber through the through holes after coating an adhesive on the surface thereof; slicing along the direction parallel to the thickness direction of the graphene film, to obtain the graphene thermally conductive gasket with a specified thickness; and coating a layer of glue on the peripheral sides of the graphene thermally conductive gasket to form an edge-wrapped layer.

A high temperature secondary seal between a rotating seal face adaptor sleeve and a rotating shaft does not consume additional axial space beyond the axial space occupied by the secondary seal. The seal includes a single ring drive collar comprising a plurality of radial directed bolts in tapped holes. As the bolts are tightened they enter a cylindrical cavity in the drive collar and impact therein a sloped surface of a crush ring. The vertical force thereby applied to the crush ring displaces the crush ring axially into a secondary graphite sealing element, thereby crushing the secondary sealing element against the adaptor sleeve and shaft, and forming a seal there between. The crush ring sloped surface can terminate in a vertical face, so that upon sufficient displacement of the crush ring the bolts abut the vertical face and impact the shaft, fixing the drive collar to the shaft.

A resin composition includes polyetheretherketone, a polyetheretherketone recycled material, and a filler, wherein a percentage of the recycled material is 25 mass % or higher with respect to a total of the polyetheretherketone and the recycled material; and the filler has a content of from 5 to 30 mass % and has an aspect ratio of from 1 to 3.