Description
Before replacing the o-ring, refer to the bottom of the sticker on of your Culligan filter housing. Two different o-ring sizes are enclosed:
Sticker plates coded “Rev C” or higher, for models HF-150A, HF-360A, and Ace 45025 housings should use the smaller o-ring enclosed. It is the same as the OR-150 o-ring.
Sticker plates coded “Rev A” or “Rev B” for models HF-150A and ALL other models (HF-160, HF-360, HF-365, Ace 45025, Ace 46764, Ace 49560) should use the larger o-ring enclosed. It is the same as the 151120 o-ring.
Note: The o-ring labels seen in the picture are just for representation. The o-rings can be identified by their size difference in the package using the instructions above to determine the correct size for your filter.
The o-ring installation process is incredibly easy. To install the o-ring, remove the old o-ring and clean out the groove with a clean cloth. Lubricate the new o-ring with clean/new silicone grease. Press the o-ring into groove with two fingers, ensuring that it sits flat and level in the groove.



