



O-Ring
for Big & Compact Blue and Clear Housings
O-Rings should be replaced when changing the filter cartridge to avoid possible water leakage.
For Big & Compact Blue Housings: HBB-20 series; HBB-10 series (input sizes: 3/4″, 1″, 1.5″)
For Big & Compact Clear Housings: HBC-20 series; HBC-10 series (input sizes: 3/4″, 1″, 1.5″)
For Housing Sets: Big Duo & Trio
For Filter Bundles: CB1, CB2 and CB3 systems
Item fits Pentek BigBlue and Hydronix Big Clear.