C3 Spacer/Filter Lid/Bulkhead O-Ring
Product Overview
The O-283-9 is the standard specification for sealing Rainbow 320 chlorinator lids and C3 spacer assemblies.
In our experience, the Super-Pro O-283-9 provides a reliable mechanical seal for static and dynamic pool applications. This specific O-ring is what pool techs reach for when servicing Rainbow 320 feeders or bulkhead connections to prevent liquid and gas bypass. In regions with high mineral content or hard water, regular inspection is vital as calcium scale buildup can compromise the O-ring's seating surface over time.
Benefits & What Makes It Different
Precision Sealing (O-283-9)
This gasket is engineered to block paths that allow water or gas to escape, maintaining system pressure in Rainbow 320 units.
Static and Dynamic Versatility
Designed to function reliably in both stationary bulkhead fittings and moving filter lid applications without losing its shape.
Chemical-Resistant Construction
Super-Pro utilizes durable compounds that resist degradation from high chlorine concentrations found in feeder lids and spacers.
Compatibility
- Pentair Rainbow 320 Automatic Chlorine/Bromine Feeders
- C3 Spacer Assemblies
- Standard Pool and Spa Bulkhead Fittings
When To Use This
Pro Tip
Always use a silicone-based lubricant rather than petroleum jelly; petroleum-based products will cause the O-283-9 rubber to swell and eventually degrade, leading to a failed seal.
Common Questions & Instructions
What are the signs that my Rainbow 320 lid O-ring needs to be replaced?
If you notice water weeping from the lid of your chlorinator or if the O-283-9 appears flattened, cracked, or stretched, it is time for a replacement to prevent air leaks.
Is the Super-Pro O-283-9 a DIY-friendly installation?
Yes, replacing this O-ring is a simple task for homeowners; just ensure the system is off and pressure is relieved before unscrewing the lid to swap the gasket.
Why should I choose this Super-Pro O-ring over a generic hardware store version?
Pool-specific O-rings like the O-283-9 are formulated to withstand constant exposure to pool chemicals and UV rays, which typically cause generic rubber to fail prematurely.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
