3x CGA320 Washer replacement for CO2Art Pro-Series Regulators

Replacement washer for the connection between the CO2 regulator and CO2 cylinder. This washer needs to be replaced every time the CO2 cylinder is refilled. Depending on your regulator version, choose between two types of washers: 3x Nylon replacement washer for CO2Art regulators purchased before 2019 3x Rubber Oring replacement for CO2Art regulators purchased after 2019 (CGA320 thread only) These special washers of the perfect consistency and hold their form. 100% leak-free seal every time.