Yes, the W126 was the first to have this, which your car is. The W201(190E's) and W124(300E's) chassis followed but all older mercedes cars have the traditional rubber gaskets as described above. The glue seams easier to me in theory but its more of an art, where as with the rubber if you mess up no big deal as the glue isnt drying etc. I havent had to do the windshields on the newer cars but it will be interesting one day.

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2006 E320 CDI
1998 S320
1987 190E 2.3-16

1990 300D 2.5 Turbo(sold)
1987 300SDL Turbo(sold)
1987 300TD Turbo(sold)
1987 190D 2.5 Turbo 5sp(sold)
1985 190E 2.3-16(sold)
1984 500SEC(sold)
1984 230TE(sold)
1978 240D(sold)-Miss it!
1972 280SE 4.5(sold)