Hayward ORP Replacement Probe (GLX-PROBE-ORP) marlig A gasket like this is

A gasket like this is useful because it helps create the seal between mated flange components

Replacing a failed or inaccurate gauge with the correct size helps maintain clean installation and supports more dependable pressure readings during routine use

If the original module is missing

6-button topside panel for compatible Balboa TP500S applications

Hayward ORP Replacement Probe (GLX-PROBE-ORP) marlig A gasket like this isAccurate ORP sensing helps compatible Hayward chemistry systems monitor sanitizer effectiveness and make better dosing decisions. This replacement ORP probe is used when the existing sensor is worn, damaged, drifting, or no longer producing reliable readings. Part GLX PROBE ORP is intended for select Hayward Sense & Dispense and compatible automation chemistry control setups. Over time, probes can age due to exposure to water chemistry, cleaning