Ensure a leak-free seal in your Big Blue whole house water filtration system with the OR-100 lubricated O-ring. Designed for a precise fit between the housing sump and cap, this replacement part maintains system integrity and prevents water leakage.

• Provides a tight, reliable seal between the system housing sump and cap to reduce the risk of leaks
• Compatible with Big Blue 10 inch and 20 inch whole house water filtration systems
• Recommended replacement every two filter changes to maintain optimal performance
• For best results, use silicone lubricant during installation and avoid over-tightening