Wet/Dry Vac

[Nogame]

Need to get a filter retainer to hold and seal the filter for the WD4050 4-gal shop vac.
Where might I find parts ??

[Woussko]

Try calling customer support. This link will give you the info about how to contact them and during what times.
http://www.ridgid.com/Tools/Contact-Us/EN/index.htm

After you obtain the part numbers, they should be able to help with ordering them.