A seal member that includes an insertion hole into which a connector terminal is insertable, wherein, when a direction in which the connector terminal is to be inserted into the insertion hole is defined as an insertion axis: an inner diameter of a cross-section of the insertion hole orthogonal to the insertion axis at a position at which the inner diameter is the smallest is denoted as a minimum hole diameter D, an outer length of a cross-section of the connector terminal orthogonal to the insertion axis at a position at which the outer length is the largest is denoted as a maximum terminal outer length L, and the minimum hole diameter D and the maximum terminal outer length L satisfy a relationship 2.1≤L/D≤4.2.

A high-power plug connection system is provided comprising a cable connection housing for connecting at least two electric high-power plug connectors in order to transmit and/or distribute high electric current strengths and/or high electric voltages, at least two insulating bodies for receiving a respective high-power contact and at least one electrically conductive rail, wherein the longitudinal axes of the high-power contacts are arranged essentially in one plane in an offset manner from each other, the high-power contacts being connected together in an electrically conductive manner by the electrically conductive rail, said high-power contacts being provided with at least one recess, into which the rail at least partly fits, and wherein an interior space formed in the cable connection housing is at least partially encapsulated with a dielectric substance.

A joint joins an alloy member to a ceramic member via a glass joining agent, which is joined to the alloy member by a material bonded joint and to the ceramic member by a further material bonded joint. The glass joining agent is made of a glass having a melting point below 800° C.; a coefficient of thermal expansion of at least 9-10.sup.−6 K.sup.−1 and a bismuth content of at least 10%. The alloy member has a coefficient of thermal expansion of at least 9-10.sup.−6 K.sup.−1. The ceramic member has a maximum coefficient of thermal expansion of 8-10.sup.−6 K.sup.−1. The material bonded joint defines a mixing region that is a partial region of the ceramic member, and the bismuth content in the mixing region is higher than that of the ceramic member outside the mixing region.

A receptacle unit of a connector for sealably engaging and disengaging contacts therein can include one or more closed inner chambers. At least one of the one or more inner chambers being configured to contain a receptacle contact. Each receptacle contact can be configured to engage a plug contact of a plug unit of a connector. A closed cavity can be at least partially in contact with each inner chamber. The closed cavity can contain a deformable material. At least a portion of the closed cavity can be configured to be movable with respect to another portion of the closed cavity to permit balancing of pressure of the deformable material within the closed cavity to pressure outside of the closed cavity.

The hermetic terminal includes a metal base that is provided with at least one sealing hole, a lead that is inserted in the sealing hole provided on the metal base, an insulating material that hermetically seals the metal base and the lead, and a heat insulating member that is provided to cover at least a partial surface of the hermetic terminal which is located inside a pressure-resistant container after the hermetic terminal is fixed to the pressure-resistant container and comes into contact with refrigerant sealed in the pressure-resistant container.

Provided is an electrical connector including an insulator, a plurality of terminals disposed in the insulator, a first housing surrounding the insulator and the terminals, a waterproof sealant, and a second housing disposed on the first housing. The first housing has a connecting port and a flange. The connecting port is configured to connect to another electrical connector, and the flange is disposed along the connecting port. The waterproof sealant is disposed onto the first housing along the connecting port and abutting the flange. The waterproof sealant is kept at a distance from the second housing.

An electrical connector including an insulating body, multiple terminals, a first housing, and a sealing ring is provided. The terminals are disposed in the insulating body. The first housing is assembled to the insulating body and surrounds the insulating body and the terminals. An exterior wall of the first housing is divided into a first area and a second area which are different from each other. A coating layer is disposed onto a surface of the second area. A surface of the first area is a raw material surface of the first housing. The sealing ring is disposed in the first area.

A motor connector comprises: a wiring unit, which includes an electric wire having a conductive wire having a conductive wire exposed through an insulating sheath, and a terminal coupled to the conductive wire and having a terminal formed at an end thereof; a base including a first molding part, in which the terminal is arranged, and a second molding part extending from the first molding part to the outside and having a space for accommodating the conductive wire and a part of the insulating sheath adjacent to the conductive wire; a fixing member coupled to the second molding part, and covering and fixing the sheath; and a grommet arranged in the space and coupled to an outer surface of the insulating sheath so as to press the electric wire.

A waterproof communication port (2) and a terminal device equipped with the waterproof communication port (2) are provided and relate to the field of terminal device technologies. The waterproof communication port (2) includes a port body (21), a connecting groove (22) is provided on a connecting end of the communication port body (21), metal terminals (23) are provided inside the connecting groove, a liquid guiding groove (24) is provided between two adjacent metal terminals (23), the liquid guiding groove (24) is located at the bottom of the connecting groove (22), a liquid dissipation cavity (25) is further provided inside the communication port body (21), and the liquid guiding groove (24) is connected with the liquid dissipation cavity (25).

A plug has a seat, a circuit board disposed in the seat, and a waterproof terminal connector disposed on the seat. The waterproof terminal connector has two terminals and a cover. Each one of the terminals has a tube portion, a division plate, and a connecting portion. The tube portion has a chamber formed in the tube portion. The division plate is formed in the tube portion for dividing the chamber of the tube portion into a first space and a second space. The connecting portion is formed on the tube portion. The cover is formed by an overmolding process, is connected to the two terminals and fills the second spaces of the two terminals. Water vapor can be stopped by the division plate for improving the waterproof effect of the plug.