The triple sealing device for an electronics housing of smart instrumentation includes: an electronic board; a first housing which has the electronic board disposed therein and includes a first inlet port to allow a cable to pass therethrough; a second housing which is provided above the first inlet port of the first housing and coupled to the first housing, and includes a second inlet port to allow a cable to pass therethrough; an elastic block provided on an inner circumferential surface of the second inlet port; and a cable which is connected to the electronic board and extends outward after passing through the first inlet port and the second inlet port.

A grommet includes a ring-shaped water stop portion inserted into a through hole formed in an attachment panel and performing water stopping, a closing portion projecting toward radial inside of the water stop portion and closing a ring shape of the water stop portion, a tube portion extending in a direction crossing an axis direction of the water stop portion and provided to penetrate the closing portion and through which a wire material is inserted, and a handle portion provided in an arch shape with respect to the closing portion with a central axis of the water stop portion serving as a center.

A waterproof connector that is easy to design and manufacture and that can provide sufficiently close contact with respect to a through hole including a tapered opening is provided. A sealing member that provides waterproofness of the waterproof connector includes an inner tube portion and an outer tube portion, and the connector body includes a holding projection. The holding projection is configured to be inserted between the inner tube portion and the outer tube portion from a rear side in an insertion direction and configured to push the outer tube portion against an inner circumferential face of the tapered opening when the sealing member is received between the outer circumferential face of the connector body and the inner circumferential face of the tapered opening.

A cable holder (10) attaches to a cable (1) with a plurality of cores (2). The cable holder (10) has a receiving body (11) with a plurality of receiving chambers (12). The chambers (12) extend in a cable longitudinal direction (L). An insertion opening (13) is formed at least on one side of the receiving chamber for inserting an end of a core (2). A fastening portion (14) is connected to the receiving chamber (12). The fastening portion (14) fastens the cable holder (10) to the outer sheath of the cable (1) by a fastening device (3) engaging around the cable (1).

A cable holder (10) attaches to a cable (1) with a plurality of cores (2). The cable holder (10) has a receiving body (11) with a plurality of receiving chambers (12). The chambers (12) extend in a cable longitudinal direction (L). An insertion opening (13) is formed at least on one side of the receiving chamber for inserting an end of a core (2). A fastening portion (14) is connected to the receiving chamber (12). The fastening portion (14) fastens the cable holder (10) to the outer sheath of the cable (1) by a fastening device (3) engaging around the cable (1).

Provided are a connector and a manufacturing method thereof. The connector is configured to dispose on a circuit board including a mounting hole. The connector includes a guide pin module and a conductive cover. The guide pin module is located on one side of the circuit board and includes a base, a metal guide pin, and a glass sealing layer. The base has a perforation hole corresponding to the mounting hole. The metal guide pin is inserted into the perforation hole and the mounting hole. The glass sealing layer is disposed at the perforation hole and wraps around part of the metal guide pin. The conductive cover is disposed at the mounting hole, connected to the top of the metal guide pin, and protrudes from the circuit board. The conductive cover is bonded to the circuit board by soldering to electrically connect the metal guide pin to the circuit board.

A connector adapted to secure an electrical power line entering an electrical meter box comprises (a) a cylindrical member adapted to be at least partially inserted into the meter box through an access hole, (b) a flange affixed to or integral with a first end of the cylindrical member and (c) a cylindrical grommet selectively insertable at least partially into a second end of the cylindrical member and securable therein. The flange remains outside of the meter box and abuts an outer surface of the wall of the meter box or abuts a gasket sandwiched between the flange and the outer surface of the wall of the meter box. The cylindrical member, the flange, and the grommet all have aligned through-holes through which the power line passes as the power line enters the meter box.

A glass-metal feedthrough includes: an external conductor having a coefficient of expansion α.sub.external, and having an opening formed therein; an internal conductor disposed in the opening, the internal conductor including iron and having a coefficient of expansion α.sub.internal, the external conductor and the internal conductor being configured to not release nickel when in contact with a human or animal body or biological cells of a cell culture; and a glass material surrounding the internal conductor within the opening and having a coefficient of expansion α.sub.glass, the coefficient of expansion of the internal conductor α.sub.internal and the coefficient of expansion of the external conductor α.sub.external are such that a joint pressure on the internal conductor of at least 30 MPa is generated in a temperature range of 20° C. to a glass transformation temperature of the glass material.

A cable-gland system provides a sealing function to openings in an electronic chassis that receive cables. The cable-gland system comprises a plurality of individual cable glands. Each of the plurality of individual cable glands includes an exterior end to be positioned adjacent an exterior of the chassis, and an interior end for positioning within the chassis. Each of the plurality of individual cable glands includes a through-hole extending between the exterior and interior ends for receiving one of the cables, and an outer surface between the exterior and interior ends. Each of the plurality of individual cable glands has a male projection on one side of the outer surface and a female recess on an opposing side of the outer surface. The cable glands are connectable to form the cable-gland system by mating the male projection on one cable gland with the female recess of an adjacent cable gland.

Embodiments of the present disclosure relate to a sealing arrangement of a bushing for a power electrical device and a bushing comprising the sealing arrangement. The sealing arrangement includes a top cover; a central conductor going through the top cover; a guide element having a cylinder portion and a flange portion extended from a middle part of the cylinder portion, wherein the cylinder portion is arranged between the top cover and the central conductor, and the flange portion is connected onto the top cover; a static sealing structure provided between the guide element and the top cover; and a dynamic sealing structure provided between the guide element and the central conductor. With the new sealing structure design, it could provide a good sealing performance so that the bushing can be used in various environments.