Abstract: A rubber product capable of easily and accurately detecting the presence or absence of leakage and a position of the leakage is provided. A rubber product includes a gas chromic material that changes a color thereof reversibly or changes an electric resistance value thereof, due to oxidation-reduction reaction. The rubber product is a sealing member (sealing product 10) for sealing a gap between two members, wherein the sealing member includes a gas chromic material that changes a color thereof reversibly or changes an electric resistance value thereof, due to oxidation-reduction reaction, and has a ring shape.

Abstract: A sealing structure capable of providing consistent sealing performance for a prolonged time, and an assembling method of the sealing structure. An installation component is provided with an annular fitting groove in which a resin gasket is mounted. The fitting groove has a bottom with an annular projection including a tapered surface increasing in a diameter thereof from a pressure side to a non-pressure side, and a tapered surface decreasing in a diameter thereof from the pressure side to the non-pressure side. The tip of the annular projection is positioned closer to the pressure side than a center in a width direction of the fitting groove.

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 radial shaft seal includes an outer cover having a cylindrical portion configured to be received in a bore of a first member and a radial portion extending radially inward from an end of the cylindrical portion. An inner seal element includes a metal case with an inner cylindrical portion configured to be received on a second member and the metal case includes a radial portion extending radially outward from the inner cylindrical portion. The inner seal element includes a dynamic oil seal lip that extends from the radial portion of the metal case and engages the radial portion of the outer cover. The inner seal element includes a static oil seal lip that extends from the radial portion of the metal case and engages an inner cover.

Abstract: A developing roll for use in an image-forming apparatus using electrophotography includes a cylindrical core made of metal; an annular elastic layer made of rubber and arranged around the core; and an annular surface layer arranged around the elastic layer. The surface layer includes a central portion and end portions. The central portion is located at the center of the developing roll in the longitudinal direction, the end portions are located at opposite end portions of the developing roll in the longitudinal direction. A coefficient of kinetic friction of the outer peripheral surface of each end portion of the surface layer is less than or equal to 0.1, and a ten-point average roughness Rz of the outer peripheral surface of each end portion of the surface layer is less than or equal to 1.8 ?m.

Abstract: A rubber composition for a torsional damper, comprising 10 to 200 parts by weight of carbon black having an iodine adsorption of 100 to 600 mg/g, a DBP oil absorption of 138 to 330 cm3/100 g and a nitrogen adsorption specific surface area of 100 to 530 m2/g, and 5 to 100 parts by weight of a liquid polyolefin oligomer having a number average molecular weight Mn of 3,000 to 4,000, based on 100 parts by weight of at least one of ethylene-propylene-non-conjugated diene terpolymer rubber, ethylene-butene-non-conjugated diene terpolymer rubber and ethylene-propylene copolymer rubber, wherein in the total amount of ethylene and propylene or butene, the content of propylene or butene is 35 to 55 wt. %.

Abstract: A gasket (1) includes a body portion (10) in an annular shape having a basal surface (11) to contact a bottom surface (113) of a groove(110) and a top surface (12) to contact a second member (200) and extending over an entire circumferential direction of the gasket (1), a first protrusion pair (20) protruding from the body portion (10) respectively toward both side surfaces (111, 112) of the groove (110) and extending over the entire circumferential direction; and a second protrusion pair (30) protruding from the first protrusion pair (20) respectively toward both the side surfaces (111, 112). Respective second protrusions (31, 32) of the second protrusion pair (30) are disposed at a same position in the circumferential direction, and tip ends (31f, 32f) of the respective second protrusions (31, 32) are formed in a planar shape to be along the side surfaces of the groove (110).

Abstract: An apparatus may be configured to: receive, from a first network node, a first indication to activate a first set of transmission configuration indicator states associated with the first network node; receive, from the first network node, a second indication of a second network node, wherein the apparatus is configured to perform simultaneous transmission, with the first network node and the second network node; and transmit, to the first network node, a first report, wherein the first report comprises at least one indication of a presence of a power backoff value associated with a pair of transmission configuration indicator states.

Abstract: A rubber composition is provided which is excellent in crosslinking characteristics and processability and is excellent in durability and heat resistance after crosslinking by using a sulfur-based crosslinking agent and a peroxide crosslinking agent in combination. The rubber composition includes 100 parts by mass of ethylene-propylene non-conjugated polyene copolymer, 1 to 3 parts by mass of peroxide crosslinking agent, and 0.1 to 0.6 parts by mass of thiazole-based crosslinking promoter. A content ratio of propylene is 30 to 55 percent by the total content of ethylene and propylene in the EPDM polymer.

Abstract: A lubricant composition containing a base oil, an alkyl benzene sulfonate metal salt, and an alkyl naphthalene sulfonate metal salt, wherein a total content of the alkyl benzene sulfonate metal salt and the alkyl naphthalene sulfonate metal salt is 1 to 2.2% by mass, and a mass fraction of the alkyl benzene sulfonate metal salt to a total mass of the alkyl benzene sulfonate metal salt and the alkyl naphthalene sulfonate metal salt is 0.3 or more.

Abstract: A coating agent for oil seal comprising 10 to 90 parts by weight in total of fluororesin particles having a particle size of 2 ?m or less and filler particles other than fluororesin particles having a particle size of 0.5 to 30 ?m, and 10 to 40 parts by weight of a wax having a melting point of 40 to 160° C., based on 100 parts by weight of isocyanate group-containing 1,2-polybutadiene, and being prepared as an organic solvent solution, wherein the fluororesin particles are used at a ratio of 20 to 80 wt. % of the total filler amount. The coating agent for oil seal can improve abrasion resistance while maintaining the roughness of a coating surface to which the coating agent is applied.

Abstract: A center bearing support suitable for suppressing the decrease in vibration absorbing capability in a high-frequency region is realized.

Abstract: A pressure regulating valve is attached to each of a plurality of power storage modules. The pressure regulating valve allows internal spaces of the power storage modules to be open, respectively, and has a short-circuit preventing structure for preventing an electrolytic solution coming outside of the power storage modules from causing a short circuit with another power storage module or a short circuit between other power storage modules.

Abstract: A method for producing a laminate includes: a first applying step of applying a first adhesive to a first surface of a first member, the first member being made of silicone rubber, the first adhesive including a silane coupling agent having epoxy groups; a second applying step of applying a second adhesive to a second surface of a second member, the second member being made of polystyrene, the second adhesive including a silane coupling agent having amino groups; and a bonding step of the first surface of the first member and the second surface of the second member to each other with the first adhesive and the second adhesive.

Abstract: A barrier coating having high temperature resistance and insulating properties includes an insulating resin, a flame retardant, and a reinforcing fiber. The insulating resin includes high-consistency silicone rubber, epoxy, or a combination of high-consistency silicone rubber and epoxy. The flame retardant includes a first flame retardant and a second flame retardant, one of the first and second flame retardants including an intumescent. The intumescent includes melamine powder, expandable graphite, or a combination of melamine powder and expandable graphite. The other flame retardant includes ammonium polyphosphate. The reinforcing fiber includes aromatic polyamide, poly-paraphenyleneterephthalamide, or a combination of aromatic polyamide and poly-paraphenyleneterephthalamide.

Abstract: A sealing device and a sealing structure with which an improvement is achieved in terms of suppressing the infiltration of foreign matter such as muddy water. An elastic seal includes a main lip, a side lip, and an intermediate lip, and a second annular recess formed along an outer peripheral surface of the side lip is recessed in a central axis direction of an inner ring and toward a sealing target space side by a greater depth than a first annular recess formed between the side lip and the intermediate lip.

Abstract: A fluororubber composition comprising 0.1 to 1 parts by weight of a compound represented by the general formula: (wherein any two of R1, R2, and R5 are lower alkyl groups having 1 to 5 carbon atoms, preferably a tert-butyl group or a tert-amyl group, and the remaining one is hydrogen, and X is a methyl group or a hydroxyl group) and having a number average molecular weight Mn of 200 to 300, based on 100 parts by weight of peroxide-crosslinkable fluororubber. The fluororubber composition that can be vulcanized at a high speed and has excellent scorch stability. Moreover, the crosslinked product can obtain stable product quality.

Abstract: A sheet-shaped cushioning rubber including a planar base portion and a three-dimensional portion formed to rise from the base portion toward one side in a sheet thickness direction, the planar base portion and the three-dimensional portion being alternately provided in one direction of a sheet plane, wherein the three-dimensional portion includes a hollow portion that opens toward the other side in the sheet thickness direction. The three-dimensional portion is integrally provided with a first rising surface that is continuous from the base portion, a top surface, a second rising surface on a side opposite to the first rising surface, and a pair of rising surfaces on both sides in a sheet width direction, and the hollow portion opens only toward the other side in the sheet thickness direction.

Abstract: A sealing device includes an annular reinforcing ring fixed to a housing, an annular elastic member that includes a fixing portion fixed to the reinforcing ring, and a lip that protrudes from the fixed portion and is in slidable contact with an outer peripheral surface of a shaft, and at least one annular spring that presses the lip against the outer peripheral surface of the shaft, the lip being between the at least one spring and the outer peripheral surface of the shaft. The elastic member is made of an electrically conductive elastic material. A contact surface, which is a part of the lip and is in contact with the outer peripheral surface of the shaft, is straight when viewed in a cross section defined by a plane that includes a central axis of the elastic member. A width of the at least one annular spring is greater than its thickness.

Abstract: Elastomeric compositions, and associated methods of manufacturing seals using such compositions, and methods of use, comprising an elastomeric material and lubricant material. In various embodiments, the elastomeric material comprises an FKM or HNBR elastomer. The lubricant material may be methyl hydroxy stearate, hydroxystearamide, or mixture thereof. Compositions may further comprise a conductive filler, such as conductive carbon black.