The AllPoints Foodservice Parts & Supplies 322071 Drain O-ring is designed for optimal performance in drink mixers. With an outer diameter of 2-1/8 inches and an inner diameter of 1-3/4 inches, this black rubber O-ring ensures a secure and leak-proof seal. Its durable construction provides resistance to wear and tear, making it an essential component for maintaining the efficiency of your mixer. Ideal for foodservice applications, this O-ring helps to prevent spills and maintain cleanliness in your workspace.