O-ring 20.22X3.53 Nbr 70Sh per V3V De Dietrich JJJ005402061

Specifically designed for V3V valves, this O-ring has an inner diameter of 20.22 mm and cross-section of 3.53 mm, made from NBR with a hardness of 70 Shore. It provides a precise seal for three-way valves commonly used in heating systems to control flow. Using the correct O-ring for your V3V valve ensures reliable operation and prevents leaks that can affect system balance and efficiency.