G316 stainless steel. Porous range:- 0.5µm,2µm,7µm,15µm 60µm and 90µm. Fits the In-Line Sparger, Drop-In Sparger, Tank Sparging Spear & Tank Drop-in Sparger.

Available in bulk, single or as a kit; Kits contain 1x sinter, 1x intermediate seal and 1x flat seal