The Nitrous Express 1-1/8" O-ring is specified to fit 5, 10, 12 and 15 lb bottle valves, providing a replacement seal for those common valve sizes. The listing identifies the O-ring by diameter and compatible bottle valve capacities, making it suitable for maintenance or repair when a valve seal needs replacement on larger nitrous cylinders equipped with the specified valve sizes.
Nitrous Express 1-1/8 O-Ring (Fits 5lb/10lb/12lb/15lb Bottle Valve)