Replace your old, worn, leaking water filter o-ring with Captain O-Ring's replacement O-RING-HB o-rings. The O-RING-HB o-ring is compatible with APEC Big Blue HBB-20 series and HBB-10 series (input sizes: 3/4", 1", 1.5"); Big Clear Housings HBC-20 series and HBC-10 series (input sizes: 3/4", 1", 1.5"); Big Duo/Trio Housing Sets; and CB1, CB2, CB3 filter bundles.
Approximate O-Ring Dimensions: 5-1/2” inside diameter, 5.83” (slightly over 5-3/4”) outside diameter, and just under 3/16” thickness.
Package contains four (4) o-rings (also called gaskets or seals). Replace your old o-ring and have spares on hand for future filter changes with this handy 4-pack.
Molded from NSF 61 certified buna-n rubber for safe and clean drinking water. Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA!