O-Ring

Franta O-Ring is a sealing component designed for stainless steel press fitting systems, helping form a reliable seal between pipes and fittings. Available in EPDM, FKM and HNBR options, it can be selected according to the medium, temperature, fitting structure and project requirements.

Multiple materials available

Complete specifications

Project Engineering Adaptation

Comprehensive product lineup

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Product Description

Product Introduction
Franta O-Ring is a key sealing component designed for stainless steel press fitting systems. It is installed inside the sealing groove of the fitting and works together with the stainless steel tube and fitting body to form a reliable sealing area after pressing.
O-Ring selection should be based on the corresponding fitting type, pipe size, sealing material, transported medium, temperature condition, pressure requirement and project specification. Material options may include EPDM, FKM and HNBR according to the applicable system requirements.
As part of the Franta stainless steel piping system, O-Rings can be supplied together with stainless steel tubes, press fittings, valves and other compatible piping accessories for project installation, maintenance and spare-part requirements.
Product Features
1. Core Press-Fitting Seal
Installed inside the sealing groove of stainless steel press fittings to help form a tight sealing area after the connection is pressed.
2. Multiple Material Options
EPDM, FKM and HNBR options can be selected according to the transported medium, operating conditions and project requirements.
3. Single-Press / Double-Press Compatibility
Can be matched with applicable Franta Single-Press and Double-Press fitting systems when the size, groove structure and material are correctly selected.
4. Stable Sealing Performance
Proper material selection, elasticity, compression recovery and dimensional matching help support long-term sealing reliability.
5. Water Supply System Application
Suitable for drinking water, cold water, hot water and building water supply systems when the correct sealing material and fitting configuration are selected.
6. Maintenance and Replacement Support
Can be supplied for new installations, distributor inventory, project maintenance, replacement and spare-part management.
Material and Selection Guidance
EPDM
Commonly selected for water supply and hot water related sealing applications when compatible with the system and project requirements.
FKM
Can be considered for selected applications requiring higher resistance characteristics according to the transported medium and temperature conditions.
HNBR
Can be selected for certain industrial or special-medium applications according to project specifications and official product data.
Final O-Ring material selection should always follow the actual transported medium, operating temperature, pressure condition, fitting structure and applicable project requirements.
Application Scenarios
Press Fitting Systems
Used as the sealing component at stainless steel pipe-to-fitting connection points in compatible press fitting systems.
Residential Water Supply
Suitable for household cold water, hot water, drinking water and residential renovation piping systems.
Commercial Buildings
Applicable to hotels, apartments, office buildings and commercial water supply systems requiring reliable sealing components.
Hot Water and Circulation Systems
Suitable for hot water and circulation pipelines when the sealing material is correctly selected according to system conditions.
Equipment Rooms and Pump Rooms
Can be used in equipment connection pipelines, pump room systems and technical spaces requiring compatible sealing components and spare-part supply.
Maintenance and Spare Parts
Suitable for distributor inventory, project maintenance, replacement requirements and after-sales service support.
Connection and System Compatibility
Franta O-Ring should be selected together with the corresponding Franta press fitting. The O-Ring size, material and sealing groove compatibility must match the fitting structure and pipe system.
For applicable press fitting systems, O-Rings can be matched with Single-Press or Double-Press fittings according to the fitting structure, sealing groove design, installation tool and project requirements.
O-Rings should not be mixed between different sizes, fitting structures or applications without confirming compatibility. For replacement requirements, the original fitting type, pipe size, sealing material and operating conditions should be confirmed before selection.
FAQ
Q1. What is a Franta O-Ring used for?
It is used as a sealing component inside stainless steel press fittings to help form a reliable sealed connection between the pipe and fitting.
Q2. What O-Ring materials are available?
Material options may include EPDM, FKM and HNBR. Final selection should follow the transported medium, temperature condition and project requirements.
Q3. Can O-Rings be used with both Single-Press and Double-Press fittings?
Yes. They can be matched with applicable Single-Press and Double-Press fitting systems when the size, groove structure and material are compatible.
Q4. Can the same O-Ring be used for different applications?
Not necessarily. O-Ring material and size should be selected according to the fitting type, transported medium, temperature, pressure and project requirements.
Q5. Can O-Rings be supplied as replacement parts?
Yes. They can be supplied for maintenance, replacement, distributor inventory and project spare-part requirements.
Q6. What information should be provided for quotation?
Please provide the fitting type, pipe size, required O-Ring material, quantity, transported medium, operating temperature and project application.

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Frequently Asked Questions

How Can I Request Franta Product Samples, Technical Documents, Product Selection Support, or a Project Quotation?

You can obtain relevant product information through the Franta website, download center, or contact channels. For projects requiring further product selection support or a quotation, please provide details such as the product name, specifications, quantity, application, and basic project information. Based on your actual requirements, Franta’s sales or technical team can provide product documentation, selection recommendations, sample support, and quotation solutions.

Does Franta Support Bulk Project Supply and Complete Stainless Steel Piping System Solutions?

Yes. Franta offers a comprehensive product range that includes stainless steel pipes, press-fit fittings, grooved fittings, flanged fittings, valves, manifolds, O-ring seals, pipe supports, fasteners, and installation tools. Based on project requirements, Franta can provide systematic product selection and coordinated supply of piping system components, helping reduce compatibility issues between different products and streamline the procurement process.

What Information Is Required to Request a Quotation for an Engineering Project?

To improve product selection and quotation efficiency, please provide information such as the project type, conveyed medium, required material grade, pipe size or specification, connection method, quantity, project location, and any special operating conditions. If design drawings, material lists, or technical specifications are available, they can also be provided. Franta can use this information to recommend suitable products and prepare an accurate quotation.

Does Franta Offer OEM and ODM Services for Stainless Steel Water Tanks?

Yes. Franta provides OEM and ODM services for stainless steel water tanks. Based on project and market requirements, we can discuss customization options for tank dimensions, structural design, surface treatment, accessories, and packaging. OEM and ODM solutions are developed according to the specific requirements and conditions of each order.

What Materials and Manufacturing Processes Are Used for Franta Stainless Steel Water Tanks?

Franta stainless steel water tanks are primarily made from high-quality stainless steel materials. Depending on the product design, manufacturing processes may include forming, welding, and surface treatment. Throughout production, quality control is carried out at key stages such as incoming material inspection, forming, welding, and surface finishing to meet different requirements for tank structure, dimensions, and surface appearance.

What Inspections and Tests Are Required After Installing a Stainless Steel Piping System?

After installation, the pipes, fittings, insertion depth, pressed joints, and pipe supports should be inspected to ensure they have been installed correctly. Pressure testing or other leak-tightness tests should then be carried out in accordance with the applicable project specifications. For concealed piping, the system should be fully inspected and accepted before walls or ceilings are closed or subsequent finishing work begins, ensuring that all requirements are met before proceeding to the next stage of construction.

Which Applications Are EPDM, FKM, and HNBR O-Rings Best Suited For?

Different O-ring materials offer different levels of temperature resistance, chemical compatibility, and aging resistance. EPDM is commonly used in water supply and conventional hot water systems, while FKM is better suited to higher-temperature conditions and certain special media. HNBR can be selected for specific industrial media and operating conditions. For each project, the sealing material should be chosen based on the conveyed medium, operating temperature, system pressure, and technical requirements rather than by color alone.

How Are Press-Fit Stainless Steel Pipe Connections Sealed, and Are They Reliable?

Press-fit stainless steel pipe connections rely on the pipe, fitting socket, O-ring seal, and a dedicated press tool working together to create a secure joint. During installation, the pipe is inserted into the fitting to the specified depth, and the fitting socket is then mechanically pressed with the proper tool. This creates a stable connection between the pipe, fitting, and sealing ring. The reliability of the connection depends on both the precision of the piping components and correct installation in accordance with the specified procedures.

What Is the Franta Active Water System, and How Is It Different from a Traditional Home Water Supply System?

The Franta Active Water System uses looped piping design and dynamic circulation components to keep water moving and refreshed within the piping system, helping reduce long-term water stagnation in certain pipe sections. Unlike traditional home water supply systems that primarily focus on delivering water from one point to another, the Active Water System places greater emphasis on continuous water movement, circulation management, and the overall household water-use experience.