Quote: (Originally Posted by
jeff h)
Is the surface of the Porex membrane smooth? (i.e. is it a good sealing surface)?
If not then running a bead of silicon around the top and bottom lip would fill in the pores. You could smooth with your finger and let dry before installing in the rig. After that it should be sealable with a flat gasket or o-ring.
Bead of Silicon (in fact any silicon inside a loop is just asking for trouble in my experience) I picked enough out of my OPV check valves etc to know that. The last flood I had was from a piece of silicon (thats used to seal the opv into the CL) working its way into the OPV.
No need to get too carried away with sealing as its got to hold back practically no differential so seal doesnt have to be great.