Item No. Not Shown 77707-0120 Sta Rite Max E ThermItem No. Not Shown 77707-0120 Sta Rite Max E Therm O-Ring Kit (Includes #s 2, 4) Used on Sta-Rite Pool Heaters PartSta-Rite is a common name in pool heater parts. The schematic diagram of heater parts, Sta-Rite pool heater parts, Sta-Rite heater parts and spares (spare heater parts) are listed. Always low prices and fast shipping. Discount Sta-Rite swimming pool heater parts and other swimming pool heater parts are always in stock and available.Back To Sta-Rite (Water System) Natural / Propane Gas Heater Parts Back To Sta-Rite Max-E-Therm (Water System) Natural / Propane Gas Heater PartsPLEASE NOTE: SOME ELECTRONIC POOL HEATER PARTS ARE NON-RETURNABLE, PLEASE CONSULT OUR RETURNS PAGE FOR MORE INFORMATION ON RETURNING PRODUCTS .