The lid seal is a key spare part for the QS 500 sand filter tank. A damaged or hardened seal causes water leakage at the tank’s closure and a drop in filtration pressure.
The replacement seal is made of a material resistant to chlorine and other pool chemicals. Its precise dimensions ensure a perfect fit without the need for additional adjustments.
Always carry out the replacement when removing the tank lid (e.g. during a service inspection or cleaning of the filter bed) – prevention is always cheaper than repeatedly topping up water during a leak.
