Hey there! I’m an O Ring supplier, and today I wanna chat about how outgassing property affects O Ring application. O Ring
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Let’s start by getting clear on what outgassing actually is. Outgassing is the release of gases from a material when it’s exposed to certain conditions like vacuum, heat, or radiation. For O Rings, these gases can be released from the rubber compound that makes up the O Ring.
Now, why does this matter in O Ring applications? Well, it can have some pretty significant impacts, depending on the specific use case.
In Vacuum Applications
One of the most common areas where outgassing is a big deal is in vacuum systems. In these setups, the goal is to create and maintain a low-pressure environment. When an O Ring with high outgassing properties is used, the gases it releases can mess up the vacuum.
For example, in a scientific vacuum chamber used for experiments, even a small amount of outgassing can contaminate the environment inside. This can lead to inaccurate results in things like particle physics experiments or materials testing.
The outgassed gases can also condense on surfaces within the vacuum system. This can cause deposits to form on sensitive equipment, like optical lenses or electronic components. Over time, these deposits can degrade the performance of the equipment, leading to costly repairs or replacements.
As an O Ring supplier, I always recommend using O Rings with low outgassing rates for vacuum applications. We’ve got a range of O Rings made from special rubber compounds that are designed to minimize outgassing. These compounds have been carefully formulated to meet the strict requirements of vacuum systems.
In Aerospace Applications
Aerospace is another field where outgassing of O Rings is a major concern. In space, the environment is extremely harsh. There’s no atmosphere to protect the equipment, and it’s exposed to high levels of radiation.
When an O Ring outgasses in a spacecraft, the released gases can cause problems in several ways. First, the gases can create a thin film on the windows or sensors of the spacecraft. This film can reduce the clarity of the vision systems, which is crucial for navigation and scientific observations.
Second, the outgassing can react with other materials in the spacecraft. For example, the gases might react with the lubricants used in moving parts, causing them to break down faster. This can lead to mechanical failures and jeopardize the safety of the mission.
We’ve worked with a lot of aerospace clients, and we know how important it is to provide them with O Rings that have excellent outgassing properties. Our aerospace-grade O Rings are tested rigorously to ensure they meet the high standards of the aerospace industry. They’re designed to withstand the extreme conditions of space and minimize the risk of outgassing-related issues.
In High-Temperature Applications
High temperatures can also trigger outgassing in O Rings. When an O Ring is exposed to heat, the chemical bonds in the rubber can break, releasing gases.
In industrial settings, like in a chemical plant or a power generation facility, O Rings are often used in high-temperature environments. If an O Ring with poor outgassing properties is used, the outgassed gases can react with the chemicals in the system. This can lead to corrosion or the formation of new compounds that can clog pipes or damage equipment.
We offer a series of O Rings made from heat-resistant rubber compounds. These compounds are designed to maintain their integrity at high temperatures and have low outgassing rates. This helps to ensure the reliable operation of the equipment in high-temperature applications.
How Outgassing Affects Sealing Performance
The outgassing property of an O Ring can also directly affect its sealing performance. When an O Ring outgasses, it loses some of its material, which can cause it to shrink or deform.
If an O Ring shrinks, it may no longer fit properly in the groove where it’s installed. This can lead to leaks, which can be a major problem in many applications. For example, in a hydraulic system, a leak can cause a loss of pressure, reducing the efficiency of the system and potentially leading to equipment failure.
On the other hand, if the outgassing causes the O Ring to deform, it may not be able to form a tight seal. This can allow fluids or gases to pass through the seal, again leading to leaks.
As an O Ring supplier, we understand the importance of providing O Rings with consistent and reliable sealing performance. That’s why we carefully control the outgassing properties of our O Rings during the manufacturing process.
Testing and Quality Assurance
To ensure that our O Rings have the right outgassing properties for different applications, we have a comprehensive testing program. We use state-of-the-art equipment to measure the outgassing rates of our O Rings under various conditions.
For example, we can simulate vacuum conditions in our lab to test how our O Rings perform in space-like environments. We also test them at different temperatures to see how heat affects their outgassing rates.
Our quality control team checks every batch of O Rings to make sure they meet our strict standards. We provide detailed test reports to our customers, so they can have confidence in the performance of our O Rings.
Conclusion
So, as you can see, the outgassing property of an O Ring can have a huge impact on its application. Whether it’s in vacuum systems, aerospace, high-temperature environments, or just for maintaining proper sealing performance, choosing the right O Ring with the appropriate outgassing properties is crucial.

If you’re in the market for O Rings and need advice on which ones are best for your specific application, don’t hesitate to reach out. We’ve got a team of experts who can help you select the perfect O Rings based on your needs. Let’s start a conversation and see how we can work together to solve your O Ring challenges.
NBR O Ring References
- R. Sperling, "Introduction to Physical Polymer Science".
- ASTM standards related to rubber materials and outgassing testing.
Haining Chaoyue Seals Co., Ltd.
As one of the most professional o ring manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please feel free to wholesale high quality o ring made in China here from our factory. Also, custom service is available.
Address: Building 9, 158 Lianhong Road, Yuanhua Town, Jiaxing, Zhejiang, China.
E-mail: chaoyue@cyseals.com
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