Abstract: A seal for a pillow block that supports a rotating shaft includes an annular body having an inner surface opposite an outer surface. Disposed in the inner surface is a retaining channel that retains two double-wound laminar gripping rings that are separated by a double-wound laminar engagement ring. The gripping rings are dimensioned to frictionally engage and are carried by the shaft as it rotates. The engagement ring remains fixed within the retaining channel relative to the rotating gripping rings, resultantly forming a labyrinth seal to prevent the intrusion of particles and debris from entering the pillow block to prevent the contamination of lubricants contained therein.