Compressor Housing O-Ring Question

[skylindrftr]

Well I pulled off my compressor housing today after doing a leak down test on it (it was leaking) only to find this:
http://i5.photobucket.com/albums/y159/jdm240/DSCN2245.jpg
I do not know exactly what this seal/o-ring like thing is. This is a t28 turbo so maybe anyone else with a t28 can tell me what it is and where to get a new one?
Here's a bigger pic:
http://i5.photobucket.com/albums/y159/jdm240/DSCN2243.jpg

Thanks!

[steve shadows]

any reputable turbo shop like

cheapturbo.com

or

ATP turbos

call them on the phone, it should be about 7 bucks or so.

Turbo City in anahiem usually has what i needs when its odd ball stuff and its local drive etc, they ship too if you need it.

[skylindrftr]

Thanks a lot!
I guess this is what I get for buying a used turbo...