It appears part # A0001581811 is NLA. So....I have located a 3D printing/prototyping company that I am going to talk to about creating the part using 3D printing. I have the broken pieces of the dust shield and the O-ring for them to use as a pattern.

If anyone else might be interested in obtaining this 3D printed part, please private message me on this forum. I believe I may be able to get a better deal if I order multiples from the 3D printing company. have a great day!