Jandy R0446300 – Backplate O-RingThe Jandy R0446300 Pro Series Backplate O Ring is designed to create a watertight seal between pump components, helping maintain proper pressure and prevent leaks. A worn or flattened O ring can compromise pump performance, making timely replacement essential for reliable operation. Made from durable material to withstand pool chemicals and regular system use, this replacement O ring helps restore a secure, dependable pump seal. Key Features