Adjective
microcellular (comparative more microcellular, superlative most microcellular)
Being composed of very small cells.
It is typically used for molding flexible foam cushions and seating, integral skin and microcellular foam padding, and shallow-draft RIM bezels and fascia. Source: Internet
Starting in the early 1980s, water-blown microcellular flexible foams were used to mold gaskets for automotive panels and air filter seals, replacing PVC plastisol from automotive applications have greatly increased market share. Source: Internet
It is typically used for molding microcellular foam gasketing and cast elastomer parts, and is milled or extruded into shape. Source: Internet