The Hayward SPX5500K Strainer O-Ring is an essential sealing component for pool and spa systems, ensuring a tight and leak-free seal between the strainer cover and pump housing. This O-ring, which measures 2-1/4" in diameter, is composed of sturdy rubber or elastomer. It successfully stops water leaks and keeps the filtration system's water flow in check. This O-ring is a flexible opt... https://www.usapoolshop.com/spx5500k-hayward-strainer-o-ring