· Package of 3PC T-Cell Salt Cell Union O-rings.· Replaces Parts GLX-UNION-ORING T-Cell-Union-ORing; Compatible with Hayward salt chlorine generators, Hayward Sense and Dispense Model P-KIT, AQL-CHEM-UPG, and Hayward wireless remote control model AQL-SS-6B-BOX.· Compatible with Hayward Goldline Salt Chlorine Generators T-15, T-9, T-5, and T-3 size T-Cells· Approximately Outside Diameter 2.76 inch, Inside Diameter 2.48 inch, Thickness 0.14 inch· Choose these high-quality and durable O-rings and you’ll be able to make the most out of each of this pack’s of O-rings.