Description
7223633 Reverse Osmosis Water Filter Sump O-Ring for Kenmore, Whirlpool, GE
(Quantity of 3)
Replacement O-ring – Part # 7223633
O-Ring for the sump pre-filter, membrane, or post-filter on Kenmore, Whirlpool, and GE reverse osmosis systems. Compatible with Whirlpool models WHER12 and WHER18.
• EPDM Material – Durometer: 70A
• Direct fit after-market replacement
• Made in USA
Product Overview:
This replacement O-ring matches the specifications of part # 7223633, used in the filter sump areas of many reverse osmosis systems made by Kenmore, Whirlpool, and GE. These O-rings help maintain a watertight seal around the pre-filter, membrane housing, or post-filter sump, which is essential for proper pressure and leak-free operation. It is also compatible with Whirlpool RO models WHER12 and WHER18.
Material & Build:
- Formulated from EPDM rubber with a 70A durometer rating for durability and resistance to treated water and filtration environments.
- Consistent dimensions for dependable sealing performance in RO housings.
- Manufactured in the USA.
Why This O-Ring Is Used:
- Maintains a tight seal inside RO filter housings to prevent moisture seepage and maintain system pressure.
- Helps ensure the filtration stages operate correctly by preventing bypass around the filter cartridge.
- Useful for routine service intervals when opening and resealing the filter sumps.
Installation Notes:
Before installing, lightly clean the O-ring groove and the sealing surface to remove old residue or mineral buildup. Avoid twisting the O-ring during installation, and ensure it sits evenly in its channel. Reassemble the sump and tighten according to the manufacturer’s guidelines.
Key Benefits:
- Reliable sealing for RO filter housings
- Supports consistent filtration performance
- Simple replacement during scheduled maintenance
All parts are brand new and satisfaction-guaranteed. User must follow manufacturer specifications during installation.





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