DUAL WINDAGE BLOCKER AND RETENTION FEATURE DESIGN FOR SEAL ASSEMBLY

A seal assembly (10) includes a rotatable shaft (16) and a stationary housing (14) circumscribing the shaft (16) to form radially inner and radially outer boundaries of a seal cavity (20) and a buffer cavity (22) adjacent to the seal cavity (20). A retention member (44) engaging the housing (14) within the seal cavity (20) includes an end plate (50) extending radially at the axial boundary between the seal and buffer cavities and a protrusion (52) extending from the end plate (50) into the buffer cavity (22).