This is straight out of the 103 Engine Manual, Job 01-212 - Removing, installing top front cover. According to the MB manual, two sealants are used:
001 989 61 20 10 - applied to left/right sides of the oil-free groove of the timing case cover(at joint to cylinder head).
002 989 00 20 10 - contact surfaces of front cover to cylinder head.
1991 300-SEL - Model 126
M103 - SOHC
James Madison - Oppressors can tyrannize only when they achieve a standing army, an enslaved press, and a disarmed populace.
Liberty Firearms Training - After years of trying to regulate California criminals with a never ending stream of gun control laws they have still not given up with the belief that if they make something a crime that criminals will miraculously start obeying the law.