95 is a changeover year for Blazers, I've read people having issues getting the correct parts for them. Glad you got'r figured out.

 

OReillys also carries them at $10.99. The o rings worked fine on the line to filter fittings. Just the line to adapter had a problem. I probably tightened them too much. Either way, I would rather go back with what was on there originally.

 

The Dorman 66201 gaskets are correct. They are used at the remote oil filter block under the radiator. The O rings should not be used, they will blow out as there is nothing to retain it in position, as you already found out