The Pentek 163516 O-Ring is used to make a seal around the quartz sleeve on the UV-110 and UV-120 systems. The o-ring should be replaced every year when you replace the UV lamp and any time you remove the quartz sleeve.
Compatible with:
- Pentek UV-110-1 (163005)
- Pentek UV-110-2 (163006)
- Pentek UV-120-1 (163007)
- Pentek UV-120-2 (163008)








