This gasket fits into our prefilter vf-lkw.
In practice, it has proven useful carrying in the vehicle a replacement filter and the corresponding seal in a small jar. If necessary, the clogged pre-filter can both be replaced and neatly stowed away. Of course the filter element can be cleaned on the way, but sometimes it is not the right place (highway) nor the right time (on the way to a wedding) :)
