An over-molded valve stem for a valve assembly includes a rigid inner member and a unitary elastic cover molded over the inner member. The inner member includes a main section and an arm extending from the main section. The cover includes a main cover portion, an arm cover portion, and an end portion, with the end portion being spaced from the main cover portion by the arm cover portion. The main cover portion is disposed over the main section with the end portion and main cover portion defining diameters that are larger than the diameter of the arm cover portion. The end portion can include an integral seal member for engaging with a bore of the valve assembly. A method of making the valve stem involves molding the cover about the inner member such that a parting line doe not axially extend across sealing surfaces.

A cap for use in covering a portion of a fastener protruding from a surface is provided. The portion includes threads. The cap includes an interior, a base that at least partially delimits the interior, a threaded receptacle on the interior configured to threadably engage the portion of the fastener, and a seal coupled to the base to engage the surface.

A method for applying a seal onto a plate, including, providing a tool containing at least one support element made of solid material including a recess, a support element made of flexible material including a first part and a second part where said support element made of flexible material is arranged at least partially in said recess, and a means for exerting a pressure in a compensation chamber of said recess, where said compensation chamber is delimited at least partially by said second part of said support element made of flexible material.

An intake device includes: an intake port; and a valve body which is disposed in the intake port and is rotated around a rotation axial line between an open/closed position, in which the valve body includes a valve body main body made of a resin, an elastically deformable seal portion formed to extend along an outer circumferential portion of the valve body main body, and a projection which is provided at a surface part adjacent to a region in which the seal portion is formed in the valve body main body, and has a shape that gradually becomes tapered toward a tip end side.

In a method of manufacturing a seal assembly, strips of material are extruded to form first and second bodies, and ends of the bodies are positioned into a mold cavity of a molding apparatus. An elastomeric material is injected into the mold cavity to form a locator device having a foot portion and a tab portion with the tab portion defining a first reference point. A thermoplastic elastomeric material is injected into the mold cavity to form a corner mold covering the body ends and the foot portion of the locator device with the corner mold defining a second reference point. The corner mold bonds the first body end, the second body end, and the locator device together to fix the locator device to the first body end at a locator position such that a predetermined distance between the reference points is maintained during injecting of the thermoplastic elastomeric material.

Improvements relating to the Manufacture of Medical Devices The present invention relates to medical devices and methods of manufacturing medical devices. The application describes method of manufacturing a medical device where at least one insert (20,22) is provided with a first sheath including an inner sheath body (24) and one or more sheath projections (26), such that the insert (20,22) and the first sheath can be supported by the one or more sheath projections (24) within a mould chamber, and a second sheath (28) is injection moulded about the inner sheath body (24) and the at least one insert (20,22), between the one or more sheath projections (26).

A sealing gasket is shown which is used to seal the belled end opening of a female ductile iron pipe to a mating male pipe having an interior surface and an exterior surface. The sealing gasket has an annular gasket body made of a resilient elastomeric material which is bonded to a hard plastic reinforcing band. The annular gasket body is installed within a raceway provided in the mouth region of the female ductile iron pipe so that an outer circumferential region forms a seal with the female pipe mouth region and an inner circumferential region forms a sealing surface for the exterior surface of the mating male pipe. The reinforcing band has a circumferential body which is made of a synthetic polymer which has a greater hardness than the elastomeric material of the remainder of the gasket body.

A sealing assembly for establishing a gas and fluid tight seal in an internal combustion engine is provided. The sealing assembly includes a plate of metal which has a plurality of openings and at least one generally flat surface. The plate also has at least one shelf which circumferentially surrounds one of the openings and which opens to the generally flat surface and the opening. The sealing assembly further includes at least one sealing bead of an elastically compressible material which is engaged with the shelf and extends outwardly therefrom past the generally flat surface for sealing the plate with another component in the internal combustion engine.

A manufacturing method and a manufacturing device for integrally forming a waterproof structure for a 3C electronic product, and the method includes the following steps: a. feeding a predetermined amount of a solid silicone raw material into a sprue; b. extruding the solid silicone raw material in the sprue, so that the solid silicone raw material flows into, through a silicone inlet channel, a waterproof structure cavity in a mold in which a product is placed; and c. heating the flowable solid silicone with a high temperature in the mold to have a vulcanization reaction, and finally to integrally form a silicone waterproof structure on the product. The waterproof structure is of a great waterproof performance, good material toughness, small wear when being used repeatedly, and great fatigue resistance.

A method is disclosed for producing a piston (8) having a circumferential seal in the form of a circular cup seal (16). In a functional, installed state, the cup seal (16) has a profile consisting of a leg held in the piston (8) and aligned radially with respect to the piston longitudinal axis (19) in a radial region (17) and of a leg which is bent by approximately 90 into an axial region (18) and is aligned approximately parallel to the piston longitudinal axis (19). The cup seal (16) is mounted in a mold as a flat or arched preform (21, 21a) with a radial region (17a, 17b) which forms the approximately radial leg, aligned with the piston longitudinal axis (19). A circumferential region (18a, 18b) projecting radially beyond the mold cavity is shaped into the axial region (18) after removing the piston from the mold to obtain the functional contour of the installed state of the cup seal (16).