
Davey Eco-Matic O-Ring for ESC/ESR Series Cell Head, M1217
30 day returns · Easy, with prepaid labels provided
Quick overview
- Genuine Davey Eco-Matic part M1217, sized to the cell head it seals.
- ESC and ESR series Listed for both the ESC series and the ESR series cell heads.
- Seals the cell head This is the ring between the head and the housing, so it is the one that keeps the cell from weeping.
- Cheap preventive part Worth replacing whenever the cell head comes off for cleaning or inspection.
- Do not stretch it on An o-ring that has been forced over an edge is already damaged, so seat it carefully.
- Silicone lubricant helps A thin film lets the ring settle into its groove instead of rolling or pinching.
Need a hand?
Frequently bought together

Davey Eco-Matic O-Ring for ESC/ESR Series Cell Head, M1217
Similar products
Other products people compare with this one.
Jandy O-Ring for TruClear Cell, R0694100$1899
CompuPool Electrode O-Ring for Clear Cell Housing, JD363ECM$1699
Hayward O-Ring for Salt & Swim Cell, GLX-DIY-ORING$3499
Solaxx Cell O-Ring GNR00009$1399
CaliMar Straight Pipe Bypass Dummy Cell for Hayward® Salt Cells, CMAR-CELL-PIPE$3299
Jandy 16' AquaPure PureLink DC Cell Cord, R0402800$2599
Solaxx PureChlor Salt Cell Cleaning Cap, GNR00004$2399
Jandy AquaPure Ei Locking Ring, R0768200$2999
CompuPool CPSC O-Ring Kit, JD363CPSC-O-KIT$2099
CompuPool CPSC Series Electrode Housing Pipe Adapter, Sold Individually, JD363108Z$2099
CompuPool Pipe Adapter O-Ring, Sold Individually, JD363PIPO$1499
CompuPool CPSC Series Pipe Adapter Collar, Sold Individually, JD363109Z$2099
CompuPool CPX Series Union Blanking Cap, CPP155-143P$2099
Jandy 2" Union/Universal Tailpiece, R0452100$2799
Hayward Salt & Swim Top Vessel Nut, GLXDIYVSLNUT$2699
CompuPool Clear Electrode Housing Body for CPSC Series, JD363102Z$5899
Jandy Winterizing Cap for Pro Series TruClear Chlorine Generating System, R0621900$6999
Pentair IntelliChlor Pass-through Cell for Winter, 520588$6999
Jandy AquaPure Ei Series Flow Switch Assembly for APURE35 Salt Chlorine Generator Cells, R0737500$14399
CMP Econ Cell Housing without Unions for PowerClean Salt System, 52000-200-103$17699
Product details
The Davey M1217 is the o-ring that seals the cell head on Eco-Matic ESC series and ESR series salt chlorinators. It is the genuine Davey part.
Where it sits
The cell head lifts off the housing whenever the cell is inspected or cleaned, and this ring is the seal between the two. It is under system pressure the whole time the pump is running, so once it hardens, flattens or nicks, the joint starts to weep and salt water finds its way onto the pad.
When to change it
Whenever the head comes off. The ring is a small part in front of an expensive cell, and disturbing an old o-ring is a good way to turn a working seal into a leaking one. A thin film of silicone o-ring lubricant on the new ring helps it settle into the groove without rolling.
| Brand | Davey |
|---|---|
| Manufacturer part number | M1217 |
| Type | O-ring |
| Series | Eco-Matic |
| Fits | Davey Eco-Matic ESC series and ESR series cell heads |
| Location | Cell head |
| Shipping weight | 0.05 lb |
| Ships | Parcel |
Request a quote
Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.
Customer reviews
More from Balboa Instruments
Balboa 1070021 Spa Circulation Pump, 1-Speed, 0.25 HP, 230V, 1.1A, 60Hz$33599
Eco-Matic 10' Cell Cord for All ESC Models, M2679$9799
Eco-Matic Replacement Salt Cell ESC24/36/48, M0657USA$71699
Balboa Heater O-Ring 2", 21619$599
Balboa Hydro-Air Standard Wall Fitting Assembly with Gasket, White, 50-3500WHT$1499
Balboa 700 Series Sensor Kit, 30337$4699
Balboa Amp Plug for 2-Speed Pump, 21087$2699
Balboa Remote FloThru Heater, VS100, 4.0kW, G7417$16699
Balboa Instruments White Air Control Assembly .5" | 10-2200WHT$2199
Balboa Instruments HYDRO JET ASSY WHT | 10-5100WHT$4299
Questions and answers
What people ask about this product, answered by our pool techs.
Which chlorinators does it fit?
Where does the o-ring sit?
Should I replace it while cleaning the cell?
Do I need lubricant?
Get your unadvertised price ›







