2007-01-23T23:17:55Z PunBB http://www.finishingtalk.com/community/topic248$2.html "3" Southern Metal Finishing 2007-01-23T23:17:55Z http://www.finishingtalk.com/community/post471.html#p471 Can anyone tell me about Duplex Seal? I work for a manufacturing company that requests on thier drawings that the Sulfuric Anodizing to have a Duplex seal. Does anyone have any information on this seal? Is there a Mil spec or equivalent for it? Thanks for any help. sstjacque 2007-01-23T19:07:20Z http://www.finishingtalk.com/community/post470.html#p470