| 摘要 |
The invention relates to tubes which are coil-shaped, and a plurality of coils which are annealed together and then coated with a protective gas. Each coil is connected to an individually controllable protective gas supply line and to an individual protective gas exit line. A seal includes a mother plug (1), whose through-openings (6) are connected to the coils and an adapted father plug (2), whose through-openings (10) are connected to separate protective gas lines. A plurality of tube supports (7) are arranged in a displaceable manner inside the through-openings (6) of the mother plug (1) and are tightened in a sealed manner inside the through-openings (10) of the father plug (2) by an actuating element (9). |
