The Rheem RTG20000N O-Ring P-22.4 is a pack of 5 high-quality O-rings designed for use in various Rheem water heater models. These O-rings are essential for creating a secure seal in gas connections, preventing leaks and ensuring safe operation. Made from durable materials, they are resistant to heat and corrosion, providing long-lasting performance. Their precise dimensions ensure a perfect fit, making installation straightforward. Ideal for both professional and DIY applications, these O-rings are a must-have for maintaining the integrity of your water heating system.