STF is a sleeve resistant to intensive abrasion with very good flexibility, its electrical properties are increased also by its external applied layer. In the short-term horizon, it tolerates thermal load, which exceeds the specified thermal resistance. The main sector of use is the manufacturers of electric motors and transformers.
| Article No. | Internal diameter (mm) | Min. Wall thickness (mm) | Spools (m) | Shape | Nominal Bore + tolerance (mm) |
| STF-005-PR | 0,5 | 0,2 | 400 | O | 0,6 + 0,3 |
| STF-008-PR | 0,8 | 0,2 | 400 | O | 0,9 + 0,3 |
| STF-010-PR | 1,0 | 0,3 | 400 | O | 1,1 + 0,3 |
| STF-015-PR | 1,5 | 0,3 | 300 | O | 1,6 + 0,3 |
| STF-020-PR | 2,0 | 0,3 | 200 | O | 2,1 + 0,3 |
| STF-025-PR | 2,5 | 0,3 | 200 | O | 2,6 + 0,3 |
| STF-030-PR | 3,0 | 0,4 | 200 | O | 3,1 + 0,4 |
| STF-035-PR | 3,5 | 0,4 | 200 | O | 3,6 + 0,4 |
| STF-040-PR | 4,0 | 0,4 | 200 | O | 4,1 + 0,4 |
| STF-050-PR | 5,0 | 0,4 | 100 | – | 5,1 + 0,4 |
| STF-060-PR | 6,0 | 0,4 | 100 | – | 6,1 + 0,4 |
| STF-070-PR | 7,0 | 0,4 | 100 | – | 7,1 + 0,4 |
| STF-080-PR | 8,0 | 0,5 | 100 | – | 8,1 + 0,5 |
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