The AllPoints Foodservice Parts & Supplies 1171192 O-ring is designed for optimal performance in water filtration systems. With a 3-1/2" outer diameter, this O-ring is compatible with both 10" and 20" slimline bowls. It is specifically engineered for use with Costguard⢠filters, ensuring a secure and reliable seal for efficient filtration. Enhance the longevity and effectiveness of your water filtration system with this essential accessory.