Don't know how tight a seal it has, but it does address one of my main complaints of acrylic nests, no easy way to quickly remove the top for cleaning etc
https://www.aliexpre...iceBeautifyAB=0
A pity it only comes with a garish orange and yellow
It does look like there might be a silicon layer on the tops of the chambers/passages
Edited by CoolColJ, June 22 2018 - 4:12 AM.