The O-Ring Kit 17.04x3.53 from Hot Water Products includes 10 high-quality O-rings designed for sealing applications in water heating systems. Made from durable materials, these O-rings provide excellent resistance to heat and pressure, ensuring a secure seal in various environments. Ideal for both residential and commercial use, this kit is essential for maintenance and repairs, helping to prevent leaks and enhance the efficiency of your heating system. Each O-ring is precision-engineered to meet industry standards, ensuring reliability and longevity.