What Size of O-Ring For Paintball?

Question: What Size of O-Ring For Paintball?

Answer: Paintball guns have many different size of o-rings, but size 015 is standard on almost all tanks and is used in many guns. The 015 o-ring has a 9/16th internal diameter and 11/16th external diameter and is commonly available at hardware stores and any store that sells paintball equipment.