just picked up a new one today, my old one was screwed.
however, it has this plastic "ring", of which I am unaware of it's purpose
thought?
![[Image: full_20130619_144839_901753130.png]]()
looking at it more, maybe it is an installation "tool"
ie, you push the whole thing through the hole, and then you pull that to "seal" it
however, it has this plastic "ring", of which I am unaware of it's purpose
thought?
![[Image: full_20130619_144839_901753130.png]](http://parts.bmwofsouthatlanta.com/images/parts/sons/fullsize/full_20130619_144839_901753130.png)
looking at it more, maybe it is an installation "tool"
ie, you push the whole thing through the hole, and then you pull that to "seal" it