Its silicone. There's a few types depending on temperatures. You run a bead around the flange, partially tighten it, wait a little while and tighten it down. It'll work just as well as a gasket if you get the right temp and follow the directions.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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