Even if you found an efficient, non destructive sealer, you would at best only effect a temporary fix. If the evap is leaking, that's gotta be replaced. If it's in the lines to or from, that might be easier, but, only slightly less expensive. Most of the cost of this job is labor. This is one area where the engineering kinda fell on it's face. This part should be much more accessible than it is. Especially since it is known to be a high failure rate item. I wouldn't go with the sealer (read Benzmac's reply 15 or 20 times).

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Jeff L
1987 300e
1989 300e
1987 BMW 325

[This message has been edited by jeffsr (edited 04-07-2000).]