Conical joints
2 conical ground sockets
with 2 conical ground sockets, borosilicate glass 3.3

| NS-Hülse | Rohraußendurch- messer mm | Länge mm | Wanddicke mm | Art. Nr. | 
| ST-socket | outer tube diameter mm | length mm | wall thickness mm | product code | 
| 7/16 | 10 | 130 | 1,5 | 61 411 103 | 
| 10/19* | 12 | 170 | 1,5 | 61 411 104 | 
| 12/21* | 15 | 190 | 1,8 | 61 411 105 | 
| 14/23* | 18 | 270 | 1,8 | 61 411 107 | 
| 14/23* | 18 | 400 | 1,8 | 61 411 108 | 
| 14/23* | 22 | 270 | 1,8 | 61 411 109 | 
| 19/26* | 22 | 250 | 1,8 | 61 411 111 | 
| 24/29* | 28 | 280 | 2,0 | 61 411 113 | 
| 29/32* | 33 | 270 | 2,0 | 61 411 117 | 
| 29/32* | 33 | 400 | 2,0 | 61 411 118 | 
| 45/40 | 50 | 200 | 2,5 | 61 411 121 | 
| 45/40* | 50 | 270 | 2,5 | 61 411 122 | 
| 45/40* | 50 | 400 | 2,5 | 61 411 128 | 
| 45/40* | 50 | 600 | 2,5 | 61 411 129 |