Sundance® / Jacuzzi® Diverter Stem O-Ring – part #6540-868

Q: Which valves use the 6540-868 O-ring?

A: It is used in diverter valves such as 6000-104 and 6540-966 in Sundance® / Jacuzzi® spas.

Q: What are its dimensions?

A: Inner diameter is approximately 0.591″ (ID) as per a manufacturer listing. Jacuzzi Hot Tubs Rochester

Q: What material is it made of?

A: It is specified as EP40 in one listing, indicating a robust elastomer material. Jacuzzi Hot Tubs Rochester

Q: Will this O-ring prevent all leaks in a diverter?

A: It primarily seals the stem. If there are leaks elsewhere (valve body, seat, cap), those components may also need attention.

Q: Is it compatible with all spa chemicals?

A: Yes, it is designed to resist common spa sanitizers and temperature cycles.

Turn off spa power and relieve pressure in plumbing.

Access the diverter valve by removing the valve cap or body as needed.

Remove the old 6540-868 O-ring from the valve stem groove.

Clean the groove and stem surface thoroughly.

Lightly lubricate the new O-ring with spa-safe silicone lubricant.

Place the new 6540-868 O-ring into the groove evenly.

Reassemble the diverter valve and test for leaks when pressurized.