This O-ring is developed to provide a sealed and secure closure around the sensor glass in Aquacare UV installations. It protects sensitive components from moisture, leaks, and particles that can affect sensor accuracy. The O-ring is made in a robust material to withstand pressure and temperature variations over time. Key benefits: Fits the sensor glass in Aquacare UV installations. Prevents water ingress and protects the sensor. Wear-resistant and reliable seal. Easy to install and replace. Please contact us if you are unsure whether this O-ring suits your system.