Quote:
Originally Posted by chevy_mike
That's not a seal, that's a snap ring and yes it should be there.
As for the year, the boxes look the same between the Inverted Flare style and the Metric style (which uses o-rings). Easiest way I know of is looking at the line fitting. Pinch the return line close to the hardline on the box and unscrew the hardline. If it has an o-ring, it's the later Metric style. If none, then its an Inverted Flare style.
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Thanks,
It is leaking out of the gap in the snap ring.