Modified Chloroprene Hydrophilic (MCR) Waterstop
Earth Shield® Modified Chloroprene Hydrophilic Waterstop (MCR) Waterstop is manufactured with NO bentonite and is available in two forms: Rubber and Paste.
Earth Shield® MCR rubber, Type NB190®
Earth Shield® MCR rubber, Type NB190® is a modern waterstop with unmatched durability and water sealing capabilities. Earth Shield® MCR more than doubles its original size (400% in 36 days) when exposed to water, creating an effective compression seal within joints of limited to no movement. It is used as a fluid-tight diaphragm, running along the joint, for water treatment plants, wastewater treatment plants, and fluid containment structures. Earth Shield® MCR Waterstops are intended for non-moving construction joints only.

Earth Shield® Type NB190® Hydrophilic Waterstop Paste
Earth Shield® Type NB190® Hydrophilic Waterstop Paste is for use in concrete cold joints, precast joints, tunnel segments, pipe penetrations, and as an optional adhesive for Type NB190® Rubber Waterstops. The paste expands 250% when immersed in fresh water for 30 days. Hydrophilic waterstop Paste can also be used as an adhesive to secure the MCR rubber Type NB190®.