<https://www.intrabv.com/fr/des-produits/colmatage/intra-expanding-seal/#richSnippet>
<http://schema.org/description>
"The INTRA Expanding Seal is the product with watertight sheet pile joints as a result. This Hydrophilic swelling sealant on Polyurethane (PU) basis expands up"
<https://www.intrabv.com/fr/des-produits/colmatage/intra-expanding-seal/>