Oring QX/P4/PCF II Filter Lid Astral/Hurlcon 45mm hole Stabilizer (cyanuric acid): protects chlorine

Stabilizer (cyanuric acid): protects chlorine from sunlight so your sanitizer lasts longer

Built to endure harsh Australian conditions

Emerkit epoxy putty bars offer excellent resistance to water

What makes it ideal for new builds

washing machines

Oring QX/P4/PCF II Filter Lid Astral/Hurlcon 45mm hole Stabilizer (cyanuric acid): protects chlorineAstral Hurlcon QX P4 PCF II Filter Lid O Ring (Part #78054) is the trusted, genuine replacement seal you need to keep your pool or spa filtration system performing at its best. Specifically designed for QX, P4, and PCF II filter lids, this O ring delivers a secure, leak free connection between the lid and housing, so you can rely on consistent pressure and clean water. Why this O ring matters is simple: a worn or damaged seal can lead to leaks,