This replacement O-ring from Culligan is designed to seal the filter housing canister to the cap on Culligan WHS100-O and WHS200-C whole house water filtration systems. Regular O-ring replacement prevents leaks and ensures your filtration system operates at peak performance.

• Compatible with Culligan WHS100-O and WHS200-C whole house filtration systems
• Seals the housing canister to the cap to prevent leaks
• Replace every third filter change to maintain a reliable seal
• O-ring diameter: 5"
• Color: Black
• Sold individually

Tip: Replace this O-ring along with every third filter cartridge change to prevent leaks and maintain proper system pressure.