Transfer Case Gasket and Electric 4x4 Engage - Pics

[98ExplorerAK]

I need help finding out what is the part number for the large gasket that mates between the tranny and the transfer case. No one in town can locate one for me. I have a 1998 Explorer 4.0 SOHC, 5R55E, and a 4405.

Also, when I hear the auto 4X4 try to engage, its a high pitch sound, is that the blue soleinoid on the transfer case.

I have included pics.

http://www.flickr.com/photos/9881509@N06/sets/72157612420822039/

Thanks

 

[HahnsB2]

RTV works just fine by itself, no need for a gasket.