Yes I made this myself...I cut both ends off of the pool filter so I had the flattest surface to work with....
then I took a 2 1/8 hole saw and centered it and drilled out both ends
on the lid end I used one of these and cut it down to a 1/4 inch before the lip
on the other end .....I used on of these
and once again cut it down to about a 1/4 inch before the lip so that their was not to much sticking into the filter but enough to get a good hold.....
Home depot has a clear liquid plastic weld that is some of the best stuff out there you could lift the Titanic with this stuff..........
what I did was mix it up and put it all around the 1/4 inch lip that I left on both pieces and insert them into the holes and then put some on the edges on both the out side and the inside...........let it set for 24 hours.........I made this a long time ago and it get hit/drug/dropped.and it has never leaked yet.....
It is really not that hard to make.......and it was like I gave my blower a inhaler and opened it up to breath........