When a fluid-tight connection has been formed by inserting the coupling assembly into the opening in the wall structure, the coupling assembly can be tilted at an angle while the fluid-tight connection is maintained.

Sealing rings are used to make the joint leak-proof.

A cable connection system comprises a connector unit (100) adapted to provide a watertight connection between two ferrules (200).

A second component (6) ensures a gastight connection between the first component and the burner tube (1).

A pipe coupling comprises a pair of flanges adapted to be secured together in face to face relation to form a fluid-tight coupling.

Preferred mechanisms also improve perfomance in deluge tests.

This forms a leak proof fitting without the need for separate flaring tools.

According to the waterproof connector, retention of the mat seal in the housing can be improved.

A sealing ring (10) is inserted in the sealing groove (3) of the female socket (2), making the joint leak proof.

The connectors are constructed to discriminate improper connectors so that no fluid tight connection can be formed with improper connectors.

A connector assembly includes first and second mating connectors that can be joined to make a fluid connection.

A coupling apparatus (1) for the sealing connection of lines which transport liquid or gaseous media has coupling parts (11, 12) which can be joined to one another in a straight coupling axis (10).

An opening (10) is provided at the bottom of the container (2).The opening (10) is located in a central position and surrounds a pressure-sealed connection between storage barrel (3) and access (12) to dosing device (11).

The leadthrough element (32, 42) has a first part (34, 44) which is formed by a cermet at the area of the gastight connection.

The invention pertains to a press-fitting process for a non removable smooth-end and tight tube coupling.