- O-Ring Kit Part Number PRTHORING7 (replaces discontinued part number PRTHORING6).
- Compatible with Express Water Standard 3.5 Diameter RO Water Filter Housings and 2 Membrane Housing (such as their RO System, ALK System, UV System, ION System and other models that specifically call for o-ring kit part numbers PRTHORING7 or PRTHORING6). Not compatible with units from other manufacturers.
- Includes 7 o-rings. Six o-rings to seal your 3.5 housings and one o-ring to seal your 2 membrane housing.
- Molded from NSF61 certified Buna-N rubber for safe and clean drinking water.
- Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA.
Get your system back in working order with Captain O-Rings replacement PRTHORING7 O-Ring Kit for Express Water RO Systems.
This o-ring kit is compatible with Express Water RO systems that use their 3.5 diameter RO Water Filter Housings with the two o-rings at the top and the single 2 membrane housing. This includes Express models such as:
- Classic Reverse Osmosis or RO System –RO10M / RO10MBN / RO10D / RO10DBN
- Alkaline Mineralization or ALK System –ROALK10M / ROALK10MBN / ROALK10DBN / ROALK10D
- Ultraviolet or UV System –ROUV10M / ROUV10MBN / ROUV10DBN / ROUV10D
- ALK & UV System –ROALKUV10M / ROALKUV10MBN / ROALKUV10DBN / ROALKUV10D
- Deionization or ION System –RODI10M / RODI10MBN / RODI10DBN / RODI10D
- And other models that specifically call for o-ring kit part numbersPRTHORING7orPRTHORING6
The PRTHORING7 includes seven (7) o-rings. This includes two o-rings for each of your three 3.5 housings (the larger o-ring at the base of the threads and the smaller o-ring at the top of the threads) as well as the smallest o-ring in the kit for the 2 membrane housing cap. See photos to view where each o-ring in the kit goes on your compatible RO system. Note: The 7-piece PRTHORING7 o-ring kit replaced the discontinued PRTHORING6 kit that previously included 6 o-rings.
Molded from NSF61 certified Buna-N rubber for safe and clean drinking water.
Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA.
