Seal SWS And Plug: Plug
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Plugs are used to close the unused cavities in a moisture proof housing.
A plug is in principle like a seal but without a hole in it for a cable.
Plugs are included in the repair kit p/n 9814235 for housings with cable terminals of the type 2.8 sws.