Generic Buna-N O-Ring [15-15/16" ID] [5/16" CS] (90-423-6115) plugs Designed for compatible Crystal Water

Designed for compatible Crystal Water systems

Improves sensing confidence and repair accuracy

or producing inconsistent ignition performance

drifted out of schedule accuracy

or too compromised to support a reliable rebuild

Generic Buna-N O-Ring [15-15/16" ID] [5/16" CS] (90-423-6115) plugs Designed for compatible Crystal WaterA Buna N O ring helps create a seal at a compatible large diameter circular connection, and this generic version is sized with a 15 15 16 inch inside diameter and a substantial 5 16 inch cross section using the 90 423 6115 reference. When a large profile O ring becomes worn, stretched, or compressed, the assembly can lose the sealing support it should maintain around the full circumference. The heavier 5 16 inch cross section gives this O ring