An assembly, in particular an underwater optical assembly is provided. The assembly comprises a tubular wall mount, a housing and a seal. The wall mount has a cylindrical bore portion and the housing comprises a head and a stem rearwardly protruding from the head along an axis. The head defines a chamber with a window for dry housing an optical device in the chamber and the stem comprising an enclosed channel in fluid communication with the chamber. The stem has a cylindrical stem portion mated to the bore portion. The assembly is configured such that in an assembled configuration the stem portion fits the bore portion in an axial direction, the head is located in front of at least the bore portion of the wall mount, the housing being attached to the wall mount and plugging the wall mount with the seal extending substantially radially between the stem portion and the bore portion sealing the assembly circumferentially watertight. The head has a radial head size and the stem has a radial stem size, wherein the head size is larger than the stem size. The head has one or more circumferential walls forwardly protruding from a substantially radial rear wall, the stem rearwardly protruding from the rear wall. The stem and the one or more circumferential walls each have a thickness in radial direction, defining a rear wall area between a radial outside of the stem and a radial inside of the one or more circumferential walls, wherein the rear wall has, for at least half the radial area a thickness in axial direction that is less than a thickness in radial direction of the circumferential wall, and preferably less than a thickness in radial direction of the stem.

An insert with a hole running through its center for a fastening connector to pass through. The self-centering sealing insert in FIG. 1a, has a central hole (pos. 1.1) running through its inner part for the passage of a fastener. Its body is made in the form of two identical truncated cones (pos.1.2 and pos.1.3) combined with their large bases in the center of the body, which tapers to the edges where a central hole is formed; and the truncated cone is part of a right circular cone formed by rotating a rectangular trapezoid around its side with a height of H (FIG. 1c) perpendicular to the bases of the trapezoid; while the radius of the larger base R1.2 is greater than the radius of the smaller base R1.1 so that the value of the angle β, which is formed by the plane between the two bases of the truncated cones and their tapering sides, is in the range from 1 to 89.9 degrees, preferably from 25 to 65, more preferably from 40 to 50, and most preferably at an angle of 45 degrees; while the radius of the larger base R1.2 and the radius of the smaller base R1.1 refers to the height of the lateral side of the rectangular trapezoid, so that the height H is less than or equal to the value of the difference between the radius of the larger base R1.2 and the radius of the smaller base R1.1.

A device that includes a thermostatic element, with a piston and a body movable along an axis with respect to one another under the effect of the expansion of a thermodilatable material, and a stopper moved axially by the body with respect to a fixed seat so as to open and close a fluid circulation passage. The stopper includes a flexible seal which rests sealingly against the fixed seat in order to close the passage, and a rigid frame which fixedly supports the seal. The frame includes a central portion, mounted around the body to be driven by the body, and a peripheral part, folded towards the axis, partially crushing the seal. The seal is held in place on the frame by being pushed, radially to the axis, directly against the body of the thermostatic element under the effect of crushing the seal by the peripheral portion of the frame.

A method of installing an insert in a body is provided, including advancing an insert into a bore of the body bounded by a lip so that a round seal of the insert passes the lip with a clearance therebetween, and so the insert first engages the body with a contact rim rather than the round seal. Accordingly, the round seal is not compromised to self-center the insert in the bore. The bore can include a shoulder distal from the lip. The round seal, which optionally can be an O-ring, can sealingly engage the shoulder and a secondary bore after the insert is self-centered in the bore. The round seal can be advanced farther into the body so another contact rim engages the shoulder. The insert can be heated so components of the body melt and fuse to parts of the insert during installation. A related system is provided.

Embodiments of the present invention provide a pre-combustion chamber assembly, comprising (a) a body, having a cylindrical end portion having a step-wise increase in diameter forming a sealing surface for sealing to an engine; (b) a tip, with a hollow shaft in fluid communication with a combustion region of the tip, where the shaft has a first shaft diameter that allows the shaft to be slid over a portion of the body; (c) a gasket mounted about the body and resting against the sealing surface, wherein the gasket comprises a wire wound washer.

A piping (1) for guiding a fluid within a drive train unit (G) of a motor vehicle includes a pipe (R). A stop (R1A) is formed at a first end (R1) of the piping (1). A sealing element (R2D) is provided at a second end (R2) of the piping (1). The sealing element (R2D) acts as an axial seal. In order to improve a sealing effect of the sealing element (R2D), the piping (1) is loaded along an extension direction of the piping (1). A drive train unit (G) for a motor vehicle including such a piping (1) and a method for installing such a piping (1) into such a drive train unit (G) is also provided.

A component comprises a mounting surface to male with another component, a seal channel extending into the mounting surface, and retention tabs extending into the seal channel at or below the mounting surface, wherein the retention tabs are spaced from each other about a perimeter of the seal channel. A method for manufacturing a component comprises producing a component with a seal channel in a flat mate face and mounds of material adjacent the seal channel that extend away from the flat mate face, and deforming the mounds of material to form retention tabs extending into the seal channel.

Tool fitting device for a power tool, in particular a chipping hammer, including—a holding device for receiving and holding a tool shank, a retention element extending at least around a section or sections of the holding device, and a dust protection device for preventing the penetration of dust into the tool fitting device. The dust protection device includes at least one first dust stripping element, at least one fixing bead, and at least one sealing lip element, wherein the sealing lip element is positioned in front of the retention element in the axial direction. Dust protection device for use in a tool fitting device.

A gasket-mounting structure includes a mounting member and a gasket. The mounting member includes a first base, an outer sleeve protruding from the first base, an inner sleeve protruding from the first base in the same direction of the outer sleeve radially inside the outer sleeve, and a groove surrounded by the first base, the outer sleeve, and the inner sleeve. The gasket includes an annular second base, an annular outer protrusion extending from the second base to be pressed in the groove, and an annular inner protrusion extending from the second base to be axially pressed on the inner sleeve radially inside the outer protrusion such that the inner sleeve is radially placed between the outer protrusion and the inner protrusion.

A storage box seal structure includes a recess, a seal member provided in the recess, and a projection that comes into contact with the seal member for sealing, and has, at an opening, a centering structure for guiding opening and closing of a lid member. The centering structure includes a first rib and a second rib projecting from opposite edges of the recess, and a guide portion that guides at least one of the first rib and the second rib at opening and closing.