The previous owner put in a rebuilt compressor,and not very well, when I turned on the switch, oil shot out from the hoses that connect to the rear of the compressor. I took out the bolt holding in the lines, and there were no gaskets or seals. Does anyone know what goes there, a gasket or seals? Any help would be appreciated. Thanks again

 

"O" rings, most likely.

 

my condensor used o-rings, but havent had the lines of the comp. most newer stuff uses a compression washer with an o-ring in it, but it could still use an o-ring. make sure you vacuum the system after you repair it