 
     
 
     * pentru protectia impotriva uzurii prin frecare a furtunurilor
(de exemplu in spalatorii auto)
| Cod | Pentru furtun | Diametru interior (mm) | Grosime perete (mm) | Exterior furtun | 
| TVD 13 | 1SN, 2SN 05-06 | 13 | 1.5 | 10-16 | 
| TVD 16 | 1SN, 2SN 06-08 | 16 | 2 | 16-20 | 
| TVD 20 | 1SN, 2SN 10-12 | 20 | 2.5 | 20-24 | 
| TVD 24 | 1SN 16, 2SN 12 | 24 | 2.5 | 24-27 | 
| TVD 27 | 1SN 20, 2SN 16 | 27 | 2.5 | 27-30 | 
| TVD 30 | 1SN, 2SN 20 | 30 | 2.5 | 30-35 | 
| TVD 35 | 1SN 25, 2SN 20 | 35 | 2.5 | 35-44 | 
| TVD 44 | 1SN, 2SN 32 | 44 | 3 | 44-50 | 
| TVD 50 | 1SN, 2SN 38 | 50 | 5 | 50-55 | 
| TVD 75 | 75 | 5 | 75-80 | |
| TVD 90 | 90 | 5 | 85-90 |