![Quantum Quartz Sleeve O-ring Seal set - THERAQ4007x4-Spare Parts-Aquatune](http://www.aquatune.net.au/cdn/shop/products/Quantum-Quartz-Sleeve-O-ring-Seal-set-THERAQ4007x4-Spare-Parts_d2952fda-b1cd-448d-bb9d-e49e0c3bff74_{width}x.jpg?v=1631780242)
Quantum Quartz Sleeve O-ring Seal
These are the o-rings that should be replaced on the Quantum AOP pool water steriliser.
There are two o-rings an either end of the sleeve (where the UV tube goes) and they will eventually deteriorate due to the UV exposure.
4 to a set