I'm trying to disassemble a valve can anyone tell me if the black thingy is an oring or something else? What's the best way to unscrew this thing without gouging or scratching it up? Any more orings inside of it?
Finally got it apart. Trying to figure out if any orings go inside? I ended up digging out the black ring. Is it an oring or some type of nylon washer. It was super hard and came out in chunks so Im not sure if that was a dried up crusty oring or something else??