to aid in the dispersion of heat due to friction particles or pellets of a metal such as copper can be embedded within the disc which can comprise butyl rubber or material of like resilient qualities the casing 67 has its sidewalls 73 in contact with the sides of the disc 68 and its annular wall 74 in sealing contact with the disc 39 s bifurcated edge the casing 67 will preferably have a low coefficient of friction lining of material like teflon the casing 67 will have a plurality of exit paths 76 leading to its exterior these paths will preferably be evenly spaced around the casing 67 and will be positioned near the upper rim of annular groove 69 as shaft 32 spins any water or other fluid which seeps into the casing 67 will be cast outward by centrifugal force into the space between the resilient disc 68 and casing sidewall 73 the curve of the groove 69 will then direct the fluid out the exit path 76 centrifugal force will also urge the bifurcated edge of the disc 68 into greater sealing contact with the annular wall 74 of the casing 67 while this seal has special application with reference to its use in a marine propulsion unit it will be understood by those skilled in the art that the seal may be used as a seal against liquids dust or other matter in other settings involving a spinning shaft in operation of the steering and propulsion system the steering propeller 4 is positioned in the water and the engine or other prime.