kayak hatch seal coming off! scupper pro seal , what glue to use?

hey folks, i have a scupper pro and the OK seals on the hatches arekind of goofy. after a bit of exposure they get weak and start peeling off the edge of the kayak. the part coming off is just the neoprene/foamy seal thing. does anyone have any advice on how to keep this seal glued down? i tried RTV and silicone but it peels off after a few excursions.

thanks!!

john

Marine Goop or Plumbers Goop. Both work very well.

Mine did the same thing.  Tote's right, marine goop fixed it.  Mine's held now for over a year.  Not that pretty, though.

cool ! thanks guys! i'll track down some goop and get to work!

john