| Parameter | Specification |
|---|---|
| Bentonite Type | Natural sodium bentonite (pH value 8-9) |
| Unit Weight | 4500-5500 g/m² |
| Tear Strength (Longitudinal/Transverse) | ≥ 3.0 kN/m |
| Hydrostatic Pressure Resistance | 0.4 MPa, no leakage for 1 hour |
| Bentonite Water Absorption | ≥ 5 times its own weight |
| Thickness (After Hydration) | 5-10 mm |
| Service Life | ≥ 50 years (in dark, dry environments) |