CO2 Regulator Replacement O-Ring Set

Over time, the rubber O-rings used in CO2 regulator inlets, solenoid valves, and cylinder connections compress, harden, and eventually fail, causing slow CO2 leaks that waste gas and allow pressure fluctuations in the system. This assorted O-ring set provides a range of sizes covering the most common CO2 regulator inlet and solenoid valve sealing points, allowing timely O-ring replacement before leaks develop. The O-rings are made from EPDM rubber, which is highly resistant to CO2 gas and suitable for aquarium equipment applications. Replacing O-rings annually at each cylinder change, or whenever a leak is suspected, is the most cost-effective way to maintain a leak-free CO2 system.