Steve's link lists the sealants used for the job, though the MB numbers are different from the ones in my manual. Perhaps MB updated the required sealant formulation since 1995.

Steve lists PN 002 989 47 20 10 used for the metal-to-metal surfaces and PN 001 989 61 20 10 used for the dabs in the corner.

My notes from the manual and previous posts show PN 002 989 73 20 10 specified for the job, and that this is similar or equivalent to Loctite 5900 and 5999. I don't think the regular rtv sold over the counter at your local auto supply house can perform properly for this job.

DON'T use sealant on the U-shaped seal, except at the corners. I suspect this design requires the surfaces to move during operation with thermal cycling. I put a light coating of silicone to aid installation. I don't feel comfortable installing any seal dry.

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95 E320 Cabriolet, 169K