DURAN® Spherical Joint, cup, polished
- Manufactured from borosilicate glass 3.3
- Flexible connections of up to 15° can be realised depending on the size of the cut (angle = tightness reduced)
- Grease-free working possible
- A tight seal is made possible by the use of an additional sealing ring.
- The nominal size describes the nominal diameter of the spherical ground joint.
- Not self-supporting
- Glass articles for further processing
Products

| Catalog No | Cup (S) | Diameter d (mm) | Wall Thickness s (mm) | Length l (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 286321401 | 13 | 8 | 1.5 | 115 | 10 | Find a distributor |
| 286323008 | 19 | 12 | 2.2 | 100 | 10 | Find a distributor |
| 286324604 | 29 | 18 | 2.5 | 120 | 10 | Find a distributor |
| 286325806 | 35 | 24 | 2.5 | 120 | 10 | Find a distributor |
| 286327404 | 41 | 28 | 2.8 | 150 | 10 | Find a distributor |
| 286329405 | 64 | 48 | 3.2 | 160 | 1 | Find a distributor |
Specifications
Product specifications are found on the product detail pages. Click on the product catalog number in the table above to view the individual product specifications.
Product Overview
The non-sanded version of the DURAN® spherical ground joint only seals over the sealing ring. Basically 2 versions of the sealing rings are available: - FEP-coated silicone rings - VITON sealing rings The nominal size is composed of the nominal diameter of the spherical ground joint and, if applicable, the clear width of the pipe diameter. This variant also enables flexible connections, these are in the angle range of 10-15°.
Products
Products

| Catalog No | Cup (S) | Diameter d (mm) | Wall Thickness s (mm) | Length l (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 286321401 | 13 | 8 | 1.5 | 115 | 10 | Find a distributor |
| 286323008 | 19 | 12 | 2.2 | 100 | 10 | Find a distributor |
| 286324604 | 29 | 18 | 2.5 | 120 | 10 | Find a distributor |
| 286325806 | 35 | 24 | 2.5 | 120 | 10 | Find a distributor |
| 286327404 | 41 | 28 | 2.8 | 150 | 10 | Find a distributor |
| 286329405 | 64 | 48 | 3.2 | 160 | 1 | Find a distributor |
Specification
Specifications
Product specifications are found on the product detail pages. Click on the product catalog number in the table above to view the individual product specifications.
Product Overview
Product Overview
The non-sanded version of the DURAN® spherical ground joint only seals over the sealing ring. Basically 2 versions of the sealing rings are available: - FEP-coated silicone rings - VITON sealing rings The nominal size is composed of the nominal diameter of the spherical ground joint and, if applicable, the clear width of the pipe diameter. This variant also enables flexible connections, these are in the angle range of 10-15°.
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