The importance of seals in contact with water
In water treatment systems, sealing rings are key components to ensure safe and efficient operation. Their main function is to prevent leaks at joints and critical points in equipment and pipelines, which helps maintain proper pressure and protect the quality of the treated water. The correct selection and installation of seals ensures the durability of the facilities and contributes to ensuring that the treated water meets the technical and sanitary requirements established for its final use, whether for human consumption, irrigation, or industrial processes.
APPLICATIONS
WATER TREATMENT
DRINKING WATER
Drinking Water Treatment Plants (DWTP)
In these facilities, seals are used in intake, filtration, flocculation, sedimentation, and chlorination systems. They ensure tight sealing in pumps, valves, pipelines, and chemical dosing systems, helping to maintain water quality all the way through to distribution.
WASTEWATER
Wastewater Treatment Plants (WWTP)
Seals are present in multiple stages of the process: pretreatment, biological treatment, secondary sedimentation, and sludge dewatering. They must withstand aggressive media and ensure proper sealing in environments with the presence of solids, gases, and significant pH variations.
SALTWATER
Desalination Plants
Especially in reverse osmosis processes, seals play a key role in maintaining pressure within membrane modules and preventing leaks in high-demand connections. They are also used in pretreatment and pumping systems, where they must withstand high salinity and elevated temperatures.
SPECIFIC
APPLICATIONS
- Reverse osmosis: PTFE seals are used for their high chemical resistance and excellent performance in contact with saltwater, and HNBR seals for their ability to withstand pressure and temperature with good elasticity.
- Pressure vessels: Require Viton® seals, which resist aggressive chemicals and high temperatures, and EPDM seals when in contact with potable water or steam.
- Lime saturators: Filled PTFE seals are installed to enhance mechanical and chemical resistance, or EPDM seals for their stability with hot water and common treatment agents.
- Silos and hoppers: NBR seals are used when oils or greases are present, and silicone seals are ideal for applications requiring high flexibility and food-grade compliance.
- Intake systems in desalination plants: FKM or EPDM seals are placed in intake windows to ensure tight sealing against salinity and harsh environmental conditions. In concrete pipe joints, durable and compression-resistant EPDM rubber seals are used—ideal for sealing underwater tunnels.
- Wastewater transport systems: EPDM seals are used in siphons, branches, and collectors, as they resist dirty water, ozone, chemicals, and pH variations.
- Flanged connections: Depending on the fluid and working conditions, compressed non-asbestos fiber (CNAF) gaskets are used for industrial applications, PTFE seals for chemical environments, or silicone and EPDM seals when in contact with drinking water.
APPROVALS
FOR WATER
At JIOrings, we offer a wide range of sealing rings that comply with various international approvals, ensuring their suitability for water treatment applications. Among the available certifications are:
- KTW: German certification that guarantees the compatibility of materials in contact with drinking water.
- WRAS: UK approval certifying that products are safe for use in potable water systems.
- DVGW W270: German standard that evaluates the resistance of materials to microbiological growth in drinking water systems.
- ACS CLP: French certification ensuring the compliance of materials in contact with water intended for human consumption.
- FDA: U.S. regulation that verifies the safety of materials in contact with food and drinking water.
TYPES
OF SEALS
Check the online stock of seals available within 24 hours:
- KTW Seals: Suitable for cold and hot drinking water, they do not alter the taste or smell of the water and comply with German regulations for materials in contact with water.
- WRAS Seals: Approved for use in drinking water systems, they prevent substance migration and meet the physical, chemical, and biological tests required by the UK WRAS scheme.
- DVGW W270 Seals: Resistant to microbiological growth, ideal for humid environments and distribution networks, ensuring hygiene during prolonged contact with water.
- ACS CLP Seals: Certified for hydraulic installations in contact with water intended for human consumption, tested for migration and sanitary compatibility in accordance with French regulations.
- FDA Seals: Compliant with U.S. regulations for contact with food and drinking water, they do not transfer odors or substances and are safe for hygienic applications.
