The silicone lubricant is used on the retainer ring to ensure proper seal and fit between O-ring, retainer ring and holder.
For membrane diffusers the O-ring is integral with the membrane, however for ceramic it is a separate piece.
Demand genuine Sanitaire parts.
For quantities over maximum or any technical questions, please contact our Sanitaire product specialist at 414-365-2200 or sanitaire.parts@xyleminc.com
For additional information regarding complete new or refurbished fine bubble aeration grids (as opposed to spare parts), please visit here.