Conical joints
Single conical ground cone
Single conical ground cone, DIN 12249, borosilicate glass 3.3

| NS-Kern | Rohraußendurchmesser mm | Länge mm | Wanddicke mm | Art. Nr. |
| ST-cone | outer tube diameter mm | length mm | wall thickness mm | product code |
| 7/16 | 6 | 120 | 1,5 | 61 414 402 |
| 10/19 | 8 | 120 | 1,5 | 61 414 403 |
| 12/21 | 11 | 120 | 1,5 | 61 414 404 |
| 14/23 | 13 | 120 | 1,5 | 61 414 405 |
| 19/26 | 17 | 120 | 1,8 | 61 414 406 |
| 24/29 | 22 | 150 | 1,8 | 61 414 407 |
| 29/32 | 26 | 150 | 2,0 | 61 414 408 |
| 34/35 | 30 | 150 | 2,0 | 61 414 409 |
| 45/40 | 40 | 150 | 2,3 | 61 414 410 |
| 60/46 | 56 | 180 | 2,5 | 61 414 411 |
| 71/51 | 65 | 200 | 3,2 | 61 414 412 |