A Roxtec RM sealing module consists of two halves, and has removable layers and a center core. Thanks to this technology called Multidiameterå», one single module can seal a cable or pipe over a span of several different diameters simply by peeling layers from the module halves. This ensures a perfect fit.

Frames of Roxtec product line Regular are filled with standard RM modules at 60 millimetres (2.362") depth, which together cover a diameter range of 3 to 99 millimetres (0.118"-3.898").