| Parameter |
Rated value for the grades |
| «B» |
«C» |
Tensile strength at break for 50 mm wide strip, N (kgf) min.:
Longitudinal
Transverse
|
600(60) 600(60) |
1000(100) 900(90) |
| Longitudinal and transverse tensile elongation , % min. |
20 |
20 |
| Heat resistance in vertical position during 2 hrs, °Ñ, min. |
+100 |
+100 |
| Flexibility: bend over R=10 mm mandrel, °Ñ, max. |
-25 |
-25 |
| Static puncture resistance at (250±10)N / (25±1)kgf during 24 hrs |
- |
watertight |
| Water resistance at 0.2 MPa (2 kgf/cm2) during 24 hrs |
watertight |
watertight |
| Water resistance: Bend over mandrel after soaking in water at (20±5) °Ñ for 7 days, max. |
-25 |
-25 |