Phosban 550 Replacment O-Ring

Phosban 550 Replacment O-Ring Reticulated foam sponges used to replace the original parts from the Phosban Reactor 150. These replacement sponges may also be used for dividing the column in a reactor to segregate different types of chemical filter media, such as activated carbon, Phosban, or adsorption resins. Packaged as a set of two.