Rubber gasket

[chacolo]

I have noticed that the rubber gasket on my girlfriend's MBA is slightly damaged at some locations. Is this only a cosmetic problem or does the rubber have a specific purpose (other than absorbing shocks when closing the LID) ? For instance, could some dust go inside the screen ?
Thanks

 

[Seamaster]

Its main purpose is to prevent dirt/grease from the keys transferring to the screen.

 

[chacolo]

Thanks for the answer.
I am still a bit "scared" cause I read this "This is a 4 piece rubber gasket kit with adhesive used in the 13" macbook air and 13" macbook pro models. This attaches to the LCD panel and prevents dust from getting on the LCD surface." here:http://www.thebookyard.com/product.php?manufacturers_id=26&products_id=9096

 

[TC25]

I am still a bit "scared" cause I read this "This is a 4 piece rubber gasket kit with adhesive used in the 13" macbook air and 13" macbook pro models. This attaches to the LCD panel and prevents dust from getting on the LCD surface." here:http://www.thebookyard.com/product.php?manufacturers_id=26&products_id=9096

...and this "scares" you why?

 

[chacolo]

Well I just want to be sure that I will not get dust under the screen

 

[TheRealDamager]

It means the front surface, not the back of the LCD.

 

[chacolo]

Well I am a bit lost 😉