BentIzol® bentonite cord — swelling waterstop for construction joints
Swelling cord of bentonite with butyl rubber for cold construction joints, precast concrete joints and utility penetrations; up to 7.0 bar.

The textured version of BentIzol® GM is made on the basis of HDPE and LLDPE in the HDPE-T, HDPE-ST, LLDPE-T and LLDPE-ST variants with texture on one or both sides and corresponds to geomembranes of types 4/1 and 4/2. The membrane is resistant to acids, alkalis, petroleum products and oils at pH 0.5–14, to ultraviolet radiation and to repeated freezing and thawing, works from −60 to +60 °C and lasts at least 50 years. It is used for liners of MSW landfills, tailings storage facilities, oil and gas facilities, canals and reservoirs.
| Manufacturer | BentIzol — OOO “BentIzol”, Vvedenskoye |
|---|---|
| Type | roll materials and membranes |
| Use | hydraulic structures and dams, tanks and pools |
| Base | geomembrane HDPE-T, HDPE-1T (HDPE-ST), LLDPE-T, LLDPE-1T (LLDPE-ST), textured on one or both sides |
| Packaging | rolls 50 or 100 m long, 5–6 m wide |
| Key properties | thickness from 1.0 to 3.0 mm; chemical resistance pH 0.5–14 (acids, alkalis, petroleum products, oils); UV resistance; from −60 to +60 °C, repeated freezing and thawing; service life at least 50 years |
| Layer thickness | 1.0–3.0 mm |
| Standards | STO 87299967.005-2021; complies with GOST R 56586-2015; certificates of conformity under GOST R and under the STO |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Swelling cord of bentonite with butyl rubber for cold construction joints, precast concrete joints and utility penetrations; up to 7.0 bar.
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