Product Details
- Brand / Manufacturer: Zodiac
- Part Number: R0511300
- Product Type: Locking ring replacement
- Compatible System Type: Select Zodiac AquaPure Ei Series electronic salt water chlorine generators
- Listed Compatible Models: APURE35 and APURE35PLG
- Product Dimensions Listed: 6 x 5 x 1 inches
- Item Weight Listed: 3 ounces
- Use Case: Replacing a worn, damaged, or missing locking ring
- Package Note: Verify whether the package includes only the locking ring or any additional sealing parts
Fit and Compatibility
This locking ring is designed for select Zodiac AquaPure Ei Series salt water chlorine generator models. It should be checked against the existing ring shape, part number, and system model before installation. If the ring is being replaced during a full cell service, compare it with an electrode replacement for AquaPure Ei Series to confirm whether other parts also need attention.
When This Locking Ring Should Be Replaced
Replace the locking ring if the current ring is cracked, stripped, loose, hard to tighten, or no longer holds the cell assembly securely. A damaged ring can affect how well the generator housing closes, so it should not be ignored during maintenance. Buyers replacing more than one worn salt-system part may also review a salt water pool replacement salt cell for broader replacement planning.
Installation and Buying Notes
Turn off power to the salt chlorine generator before removing or installing any replacement part. Clean the surrounding area, inspect the sealing surface, and make sure the ring seats evenly before tightening. Do not force the ring if it does not align properly, because that may damage the housing or threads.
Related Replacement Parts to Compare
If this locking ring is part of a larger repair, check the salt cell, electrode assembly, unions, and seals before placing the order. A salt cell chlorine generator replacement may be needed if the cell itself is worn, while a T-Cell union nut and tailpiece replacement may be useful for buyers working on plumbing-side connections.
Maintenance Notes
Inspect the locking ring during routine salt system cleaning, especially when removing the cell for service. Keep the ring and threads clean from salt buildup, debris, and scale. Replace the ring if it no longer tightens smoothly or if visible damage appears around the locking edge.















