2 Pcs Max Water O ring for BB Filter Housings Size 10″ & 20″x4.5″ Double Oring C
2 Pcs Max Water BB O ring for Big Blue water filter housings size 10 Inch & 20 Inch x4.5 Inch(Double Oring) Please check your O ring CS size before consider buying this item. This o rings will not fit to our single o rings filter housings model. Please make sure you are ordering the right spare O rings. FDA Graded Inside Diameter / ID = 5-5/8 inch Outside Diameter / OD = 5.75 inch CS / 0.170 inch If you are looking for 10 inch & 20 inch Double o ring Non Brass PVC Port Please Click Here 153184443697 If you are looking for 10 inch & 20 inch Single o ring Please Click Here 152015455855NOTE: this o-ring will fit only this housing head please check before you purchase (Brass NPT port + 1/8″ Gauge Hole)