to the case body 152 and case flange 166 in a single injection molding operation a second sleeve or face sleeve 200 is adapted to fit coaxially around the shaft 121 and is adjacent the outer end of the first sleeve 122 the second sleeve outer end 201 extends out into the environment excluded by the seal the second sleeve bore 202 may be coated with an elastomeric coating 203 in the region between the second sleeve outer end 201 and the second sleeve inner end 204 the second sleeve flange 205 extends radially outwardly from the second sleeve inner end 204 and runs generally parallel to the first sleeve flange 132 the second sleeve flange 205 has a second sleeve flange inner edge 206 from which a perimeter lip 207 extends radially outwardly towards the seal case outer end 160 in other embodiments the perimeter lip 207 may be located on the first sleeve flange outer edge 134 the perimeter lip 207 contacts the seal case 150 near the seal case outer end 160 the face sleeve bore elastomeric coating 203 and the perimeter lip 207 may be formed and attached to the second sleeve 200 in a single injection molding operation on the inner end of the case body 152 the case elastomeric coating 156 is.