Yes, you take the fuel filter element out (not designed for this application) and replace it with this foam.
ok sounds great just ordered :
https://www.ebay.ca/itm/Uni-BF-5-Bu...ash=item4d17f33bf8:g:jGIAAOSwjXNaTrSW&vxp=mtr
and
https://www.ebay.ca/itm/10mm-3-8-Un...ash=item5d68ff129e:g:0W0AAOSwq~tZUxOp&vxp=mtr
can you please post some pics of how much foam you put inside the filter ?