Backup rings might seem trivial but they have a huge impact. Many industries from oil and gas and aerospace to automotive and medical rely on high-performance sealing solutions to maintain their efficiency and prevent costly failures. And backup rings have a critical role in proper sealing.
At AFT Fluorotec, we specialise in expertly engineered backup rings to enhance seal integrity and extend equipment lifespan. By utilising the highest quality materials, we help industries meet their high pressure sealing needs.
What Are Backup Rings and Why Are They Essential?
A backup ring is a rigid ring that is usually made from thermoplastic material like filled PTFE (polytetrafluoroethylene) or PEEK (polyether ether ketone). These rings are designed to close off the sealing system’s extrusion gap and support the main seal. In simple terms, a backup ring holds a seal or plastic connection in place. This is especially used in high pressure situations.
Backup rings help stop O-ring migration (movement of the O-ring from its correct position), in both static and dynamic fluid power applications as the pressure fluctuates. This prevents the extrusion of an O-ring in the gap.
By reducing the risk of extrusion and wear, backup rings also prolong the life of O-rings and other seals. This leads to enhanced durability and longer maintenance intervals.
Choosing the right backup ring material
Selecting the right backup ring is essential for optimal performance in your sealing system. This starts with choosing the best material that is compatible with the fluids, gases or chemicals it will encounter. For instance, PTFE backup rings are ideal for a variety of applications. PTFE is a highly flexible, non-stick material that is also electrical, chemically and thermal resistant.
As one of the highest performing thermoplastics, PEEK is another excellent material for backup rings. Not only can it withstand a wide range of temperatures, it is strong, rigid and reliable in extreme chemical conditions.
Industry-Specific Applications of Backup Rings
Oil & Gas
In the oil and gas industry, high pressure environments are common, resulting in backup rings being needed in various equipment. From drilling tools and valves to pipeline applications, backup rings are required to withstand harsh operating conditions, including strong chemicals and extreme temperatures.
Our PTFE and PEEK backup rings are often used for sealing applications in the oil and gas production process. Both materials offer exceptional resistance to chemicals and high temperatures.
Aerospace & Defence
High-pressure aerospace hydraulic systems are extremely important for aircrafts. From the landing gear and flight controls to fuel systems and brakes, it powers everything the aeroplane needs to operate safely and efficiently. And these systems cannot function without a key component - the backup ring. Backup rings play a crucial role in ensuring the integrity of seals within pressurised aerospace hydraulic systems, at extreme altitudes and various temperatures.
As certified experts in processing PTFE and other engineering plastics for the Aircraft, Space and Defence (AS&D) industry, we are compliant with aerospace-grade materials and standards. Our backup rings will significantly reduce the chances of seal extrusion and be able to withstand high pressure for a robust reliable hydraulic system.
Automotive
In the automotive industry, backup rings are used in engines, transmissions and braking systems. They are used to enhance sealing performance and reliability and are required to be resistant to high temperatures, fuels and lubricants.
Our high precision backup rings are tailored to automotive sealing needs. Materials like PTFE and PEEK enable the backup rings to operate effectively across a wide temperature range, ensuring reliable performance in demanding automotive applications.
Medical and Pharmaceutical
The medical and pharmaceutical industry requires backup rings for contamination-free sealing in critical equipment. For instance, high-pressure sterilisation equipment needs backup rings to ensure the system remains sealed under high temperatures and pressures. This not only contributes to sterility but also the safety of medical devices.
Our backup rings are compliant with the strict hygiene and safety standards of the medical industry. We’ve manufactured components in the medical industry for many years with projects in dental and surgical equipment. So you can rest assured that our parts are durable, can withstand a variety of chemicals and are tailored to your device’s needs.
Food & Beverage
The food and beverage industry uses backup rings in high temperature environments for processing equipment and packaging machinery. The ability to withstand different temperatures and pressures is therefore essential. As well as compatibility with food-grade materials. With our backup rings, high pressure machinery used for food, drink or packaging will have excellent sealing enabling it to work effectively, resulting in an efficient production process.
Key Benefits of Using AFT Fluorotec’s Backup Rings
- Advanced Materials - Our custom fluoropolymers like PTFE, PEEK are trusted by our clients to meet their high pressure sealing needs. By choosing one of our high quality backup ring materials, you will reduce the chances of seal extrusion and enhance the reliability of your system.
- Longer Seal Life and Reduced Downtime: By providing necessary support, backup rings help extend the seal’s lifespan, thus increasing its lifespan. If you choose our high performance backup rings, you’ll increase productivity of your equipment and lessen the need for seal replacements.
- Industry-Specific Compliance: AFT Fluorotec has the necessary ISO certifications, aerospace and medical-grade approvals so you can rest assured that the backup rings we provide comply with your industry’s regulations.
- Custom Engineering Solutions: We pride ourselves on providing bespoke parts, as we believe there is no one si/e fits all solution. Our tailored backup rings will meet your unique industry requirements and increase your operation’s efficiency.
Choose the Right Backup Ring for Your Application
Backup rings may not be the most conspicuous component of your system but they play an extremely crucial role. From preventing seal extrusion to enhancing your equipment’s reliability, their importance is indisputable.
When you work with us, we’ll help you choose from our PTFE and PEEK backup rings that are highly durable and tailored to your specific application. We’ll help you consider factors such as pressure, temperature, chemical exposure and material compatibility.
Whichever industry you require backup rings for, our team will advise you on the best one for your needs.
Contact us to discuss your high pressure sealing needs.
FAQs
What is the purpose of a backup ring?
Backup rings stop O-ring migration and prevent seal extrusion under high pressure, increasing seal longevity and efficiency.
Which type of seal requires a backup ring?
O-rings, hydraulic seals, and other high-pressure sealing applications benefit from backup rings, particularly in extreme environments.
