Set of 2 double O-ring seals for water filters and reverse osmosis systems (RO Double). Designed for housings where the O-rings are placed close together. The set includes a lower and an upper seal. Free: special grease for lubricating seals, facilitating installation and improving tightness.
2x Double O-RING for Water Filter Seal for Reverse Osmosis is a practical set of two seals designed for filter housings in RO Double systems, where the O-rings are seated close together. It is a suitable choice for servicing installations such as reverse osmosis, osmosis filter, reverse osmosis system, and other water treatment solutions. The set includes a lower and upper seal as well as a special petroleum jelly for lubricating the seals, which makes installation easier and helps maintain proper tightness.

The set has been prepared for housings that use a double sealing arrangement. This solution is used in selected filter housings, where two O-rings work very close to each other and are responsible for proper sealing of the connection.
If you are replacing seals in an installation such as a water filter, reverse osmosis filter, or a complete water filtration system, a properly matched double O-ring helps maintain correct fit of the components and safe operation of the system.
The O-rings fit sets with a double O-ring, used in housings with seals seated “close together”. This is an important design feature, because such housings require the correct type of seal - different from housings using a single O-ring or a different sealing spacing.
The set is intended for RO Double reverse osmosis systems. Before installation, it is worth comparing the type of seal used with the housing to select the correct set for the housing body.
The price applies to a complete set of 2 pieces. The package includes:
The included petroleum jelly makes it easier to seat the seals during installation, reduces the risk of the material folding over, and helps achieve better tightness after the housing is tightened.
Before installation, clean the seal seat and make sure the new double O-ring is positioned correctly around the entire circumference. A thin layer of the included petroleum jelly makes it easier to seat the seal and reduces the risk of damage during tightening of the housing.
Double O-ring seals are a consumable component that is very important for the proper operation of the filter housing. In systems such as reverse osmosis or an osmosis filter, the tightness of connections affects ease of use and the correct operation of the entire system.
Replacing a worn seal is especially important during system inspection, housing cleaning, or cartridge servicing. A new set helps restore proper sealing at the point where the housing components connect.

| Product type | Double O-ring / water filter seal set |
|---|---|
| Number of seals in the set | 2 pcs. |
| Set configuration | Lower seal and upper seal |
| Intended use | Reverse osmosis systems, RO Double system |
| Compatibility | Housings with a double O-ring, where the seals are seated close together |
| Included extras | Special petroleum jelly for lubricating the seals |
It is a seal set designed to seal filter housings in RO Double reverse osmosis systems. The double sealing arrangement is used in housings where the O-rings work close together.
Yes. The комплект includes 2 pieces: a lower seal and an upper seal.
No. The set is intended for housings with a double O-ring, where the seals are seated close together. Before purchase, it is worth checking the type of sealing used in the housing body.
It refers to a housing design in which two sealing rings are located at a small distance from each other and work together as a double seal. The correct type of O-ring should be selected for such a housing.
The special petroleum jelly makes installation easier, helps the seal sit evenly in the seat, and supports maintaining tightness after the housing is tightened. It is a practical service accessory.
Before installation, clean the seal seat, check the condition of the contact surfaces, then apply a thin layer of petroleum jelly and seat the O-rings evenly around the entire circumference. After tightening the housing, it is worth checking the tightness of the system.
Yes, the set is intended specifically for RO Double reverse osmosis systems and housings using a double O-ring.
Replacement is recommended during housing servicing, after noticing leaks, when the seal is worn or deformed, and when the old O-ring no longer provides proper sealing.
Set of 2 double O-ring seals for water filters and reverse osmosis systems (RO Double). Designed for housings where the O-rings are placed close together. The set includes a lower and an upper seal. Free: special grease for lubricating seals, facilitating installation and improving tightness.