Front engine seal failure on 1998 Mercedes-Benz E430

My front engine seal failed and i replaced it but when i start the car it blows it out again and oil comes out from it. What may cause the seal to blow agian and fail???

Asked by for the 1998 Mercedes-Benz E430
What was the reason, and how did you fix the problem behind the front oil seal continually blowing out?
1 more answer , 1 more comment
Check your entire PCV system and make sure that it is totally clean. If it is clogged, too much crankcase pressure will build up and blow out ALL of your seals.
What did you ever find the cause was, mine is doing the same thing?