Myers U9-379A, Shaft Seal Stationary Head Assembly, for use with Model MDC33P1, MDC50P1, MDC33PC1 20, MDC33PC1 30, MDC50PC1, MDC33V1, MDC50V1, MDC33V1 20, MDC50VC1, MDC5010M, MDC33D1 20, MDC50D1 20, MDC33D1, MDC50D1, MWS550110M, MWS550110T, Series MDC, MW