High Temperature O-Ring Manufacturer in China

YOSON manufactured high-temperature O-rings using high-grade quality raw materials. Our temperature O-rings are tested and proven with dimensional accuracy and stability. These are widely used in the automobile and engineering industries.

  • Provides excellent strength
  • Resistance against abrasion
  • Heat and compression-resistant
  • Maximum Temperature up to 320°C (608°F)

YOSON - Custom High Temperature O-Ring Supplier

YOSON is a provider of high-temperature O-rings that are designed to withstand extreme heat. These are widely used for providing a reliable seal between two components or surfaces. It is ideal for demanding industries environments such as chemical processing, gas and oil refineries, and other applications where a high-temperature seal is needed.

We offer customized high-temperature O-rings to meet the demand solution in different industries. Our factory in China is well-equipped with advanced production machines and testing equipment to ensure quality. YOSON will provide you with a high-temperature O-ring with varying sizes of specifications, accessible design, fast proofing, design drawing, and more.

Please send us your inquiry now!

High Temperature Silicon Rubber O-ring

We manufactured high-temperature silicone O-rings available in different colors such as black, blue, red, etc. It can be customized by size and design according to customers’ requirements.

Waterproof Nitrile High Temperature O-Ring

YOSON provides waterproof nitrile high temperatures O-rings made from NBR, FKM, EPDM, HNBR, Silicon, and much more. It has a hardness of 30 – 90 shore and offers superior quality.

Food Grade High Temperature O-ring

The food-grade high-temperature O-ring are heat resistance, oil resistance, and chemical resistant. This is applicable to the auto industry, construction machinery, food health, machine tools, and more.

High Temperature Oil-Resistant O-Ring

We manufactured a high-temperature oil-resistant ring using the compression molding production technique. It is impervious to UV lighting, non-toxic, chemically inert, and can work from -20◦C to 320◦C.

Colorful High Temperature Resistant O-ring

The colorful high-temperature resistant O-ring is resistant to high pressure, weather, solvent, abrasion-resistant, aging resistant, acid and alkaline resistant. It is available in customized size colors and designs.

High Temperature Acid Resistant O-ring

Our high-temperature acid-resistant O-rings are made from high-quality materials with good sealing performance. It is commonly used for the production of oil tanks, fuel tanks, and oil pressure.

NBR and FKM Silicon Rubber O-ring

The NBR and FKM silicon rubber O-ring is a rubber seal whose cross-section is circular. This is widely used in metallurgy, automobile, mechanical, and electric power industry for sealing applications.

EPDM PTFE High Temperature O-ring

YOSON provides EPDM high-temperature O-ring that is steam and hot resistant, commonly used in engines. The EPDM high-temperature O-ring meets ISO9001, ISO14001, TS160949, and RoHS Standard.

Customized High Temperature O-ring

We manufacture customized high-temperature O-rings widely used for chemical processing, water treatment, hydraulic Pneumatic, and industrial manufacturing. It is available in customized colors and designs.

Why Choose YOSON High Temperature O-Ring

Chemical Resistant
Chemical Resistant

The high-temperature O-ring is chemical resistant to oils, acids, oxygen, carbon dioxide, silicon fluids, glucose, and so on. It allows the seal remains durable even in a critical sealing environment.

High Performance
High Performance

YOSON manufactured high-temperature O-rings that offer high performance, sturdiness, high strength, resistance, and durability for different industries that require high precision sealing.

Pressure Resistant
Pressure Resistant

Our high-temperature O-ring will remain strong under pressure. YOSON offers a high-temperature O-ring which resistant to compression and a trusted sealing that won’t crack.

Long Life Service
Long life Service

We can provide a high-temperature O-ring that can withstand temperatures ranging from -13◦F to 446◦F and above. Therefore, it is strong and has the capacity to provide long life service.

High Temperature O-Ring for Superior Sealing Performance

YOSON offers high-temperature O-rings that have elasticity and resistance. These are manufactured with excellent sealing force and chemical resistance. The high-temperature O-rings are certified with a wide working temperature ranging from -45⁰C up to 330⁰C. Therefore, these are guaranteed to provide superior sealing performance in a demanding application.

YOSON also provides a high-temperature O-ring that offers reliable leak-tight sealing. We built these O-rings with durability to ensure long-lasting performance. It can withstand explosions and washdowns. With our high-temperature O-rings, you can increase productivity while minimizing downtime.

High Temperature O-Ring for Superior Sealing Performance
Elastomers Used for High Temperature O-rings Production

Elastomers Used for High Temperature O-rings Production

YOSON can provide and distributes O-rings in a variety of materials that can be used in a high-temperature application. We used different elastomers such as the following:

  • Silicon or SiR
  • Viton or FKM
  • EPDM or EPR
  • High Saturated Nitrile
  • PTFE generated compound of Teflon
  • PTFE coated
  • Encapsulated PTFE
  • Simriz, Chemraz, and Kalrez or FFKM
  • TFE/P or Aflaz
  • Custom formulation and compound

Certification and Specification

YOSON high-temperature O-ring and high-temperature seal are able to withstand temperatures ranging from 250◦C up to 450◦C. Below are its certifications and specifications:

  • Certifications from AS568
  • Complied to USP Class VI and FDA standard
  • Certified by NAS, AMS, and Mil specifications
  • UL Listed O-rings
  • Approved by NSF61 and NSF51

You can purchase customized high-temperature O-rings in different colors and sizes.


Wholesale High-Temperature O-Ring Supplier in China

Wholesale High-Temperature O-Ring Supplier in China

YOSON offers wholesale high-temperature O-rings for different sealing applications including life science, machine design, alternative fuels, and many more. These are manufactured with high hardness to ensure that they can withstand the harshest conditions. Our high-temperature O-rings are also chemical resistant, acid-resistant, leak-proof, and reliable. It can operate under a wide working temperature range.

Our factory in China is well-equipped with advanced technology and fully automated production equipment. Thus, you can assure that all our high-temperature O-rings are durable, long-lasting, and can provide superior sealing performance. We also offer customized colors and OEM services to meet your business requirements. Our team can customize your high-temperature O-ring with your logo and brand name.

High Temperature O-Ring Applications

Food Grade High Temperature O-Ring

We provide a high-temperature O-ring that is also used for food-grade applications. The food-grade O-ring has been manufactured to meet the exact standards of material composition used for the production and preparation of meals, beverages, and dining products.

As a manufacturer, we make sure that the high-temperature O-ring could achieve food-grade approval and take into account extractable ingredients and compounds.  The common food-grade O-ring materials include EPDM, nitrile, neoprene, silicone, and fluorocarbon.

FFKM Kalrez O ring

Perfluoroelastomers are suitable for sealing applications in corrosive chemical media in several high-temperature environments. They can resist almost all chemical agents, including organic acids, inorganic acids, strong bases, ketones, esters, alcohols, oils and high temperature water. Use temperature: (or lower temperature -40 ℃) -20 ℃ ~ +290 ℃ (or higher temperature 327 ℃) long-term use, this high-performance materials can be used in a variety of products: O-rings, oil seals, diaphragms, packing, seals and other applications in chemical corrosion, aerospace and semiconductor industry and other products.


The high-temperature O-ring is very useful for high-performance turbo engines. Our high-temperature O-ring is good enough in material construction and design to handle various challenging requirements, chemical compatibility, and features.

YOSON high-temperature O-ring is created from compatible hybrid materials that allow maintaining crucial O-ring properties while offering more robust resistance to heat, O-ring leaking, pressure, and other chemical attack on the engines.


The high-temperature O-ring is mostly used for aircraft and aerospace due to its chemical resistant that can able to operate at pressure and temperature. Thus, keeping an aerospace crafts powertrain running cleanly, smoothly, and efficiently. It is typically used in fuel system O-ring, fuel cap gasket, and cover seals.

YOSON commonly used elastomer for aircraft application such as ethylene-propylene, nitriles, fluorosilicons, and more due to the different gauges and sizes of O-ring that is distributed throughout the aircraft system engines.

High Temperature O-ring for CO2

The high-temperature O-ring for CO2 is a durable material that has a tendency to absorb the gas over time to prevent leaks or swelling up. The use of high-temperature O-ring is to avoid CO2 contact which includes polyurethane, PTFE, Fluoroelastomers, and nitrile.

However, the high-temperature O-ring is the best choice that always depends on the considerations of other factor or environmental applications.


In plumbing, the High-temperature O-ring is formed tight to avoid leaks. It is waterproof and seals around the taps and other fittings. The plumbing O-ring are widespread given the range of materials, gauges,s and sizes used for ducting and pipework applications.

We offer the best high-temperature O-ring including the specific size and shapes to meet the specific role of plumbing.

Choose YOSON as Your Reliable High-Temperature O-Ring Manufacturer

Suitable for Extreme Environment

Our heat-resistant O-rings are designed to operate for an extremely high temperature that is involved in some industries such as transport and chemical processing, gas and oil recovery, or even in formula one race engines and other applications that involve heat processes.

Short Lead Time

Here in YOSON, we can supply standard high-temperature O-ring lead time for 48 hours. However, for custom high-temperature O-rings, where additional tooling requires, we can deliver from 7 up to 10 days, depending on the quantity of your order.

Built-in Quality

The quality is inbuilt into every aspect of our high temperatures O-ring seals. Our team operates under a quality system in accordance with ISO 9001. We have full traceability from raw materials to finish high-temperature O-ring solutions. YOSON produced high-temperature O-ring under the strictest control process within cleanroom conditions and was designed to deliver the highest standard of repeatability and reliability performance.

Your Trusted EPR O-Ring Manufacturer in China
Your Trusted High-Temperature O-Ring Manufacturer in China

YOSON offers high-temperature O-ring with no minimum requirement, competitive price, short lead time, and prompt delivery. You can also ensure customization services, after-sales support, and technical support.

Common Materials Temperature Range Chart

  • “YOSON is my supplier of high-temperature O-ring for three years now. Throughout the year, they never failed to provide me excellent quality and durability.”

  • “My customers loved the high-temperature O-rings supplied by YOSON. The quality is really good with high strength and different colors.”

  • “I highly recommend YOSON if you are looking for high-quality high-temperature O-rings. I sourced O-rings from YOSON and all are stable and reliable for different applications.”

High Temperature O Ring Manufacturer in China


Yoson is a leading o rings manufacturer for high-temperature applications.


We manufacture seals of any size and shape and  provide reasonable sealing solutions for your project

  • Stability and reliability of quality
  • High product cost performance
  • Shore lead time
  • After-sales service

High Temperature O rings are made of durable elastomer rubber and provide a reliable seal that won’t leak under high-pressure conditions.

Temperatures of -48℃ to 260℃ and pressures reaching 55 bars are mostly the limits that these O-rings can withstand.

It’s easy to install and can be used in a wide variety of applications. They can also resist a lot of stress.

These O-rings can withstand extreme conditions, making them ideal for use in airplanes and other high-stress environments.

Oil and gas industries are also the major users of these specially designed high-temperature O-rings because they can be subjected to extreme pressure and temperature. They are also the perfect choice for pumps because they are designed to handle high volumes of fluid.

Manufacturing companies and the transport sectors also utilize these O-rings because they are made from tough and heat-resistant materials. By containing the fluid inside the pressurized vessel, the equipment is protected and retains its functionality and productivity.

And if you are looking to prevent fracking fluid leakage, settle for these types of O-rings.

A chemical mixture called fracking fluid is utilized in oil drilling processes to maximize the amount of petroleum or natural gas that may be retrieved.

Material type of O-rings should be chosen depending on the range of temperature that it can withstand. Below are the typical materials used in the construction of high-temperature O-rings:

FKM (Fluorine rubber) 

This material can resist temperatures between -45℃ to 204℃. It can also resist a wide variety of chemicals, gas, and ozone.

FFKM (Perfluoroelastomers)

 It can withstand Ultrahigh vacuum pressures (below 100 nanopascals) thus it is used in vacuum operations like degasification requiring low contamination settings. Resistant to chemicals and high temperature settings, thus can be used in many applications. It is also self-extinguishing so it is able to prevent the spread of flame.

FVMQ (Fluoro Vinyl Methyl Siloxane Rubber)

The characteristics of this material can be compared closely to silicon such as its physical properties. It can deal with various chemicals like fuel, base, and dilute acid. It is widely used in spaceflight because it can withstand lubricants and oils.

FEP (Fluorinated Ethylene Propylene)

Operates only at 399℉. This material can resist heat and chemicals like alkaline. It prevents rust formation because of its corrosion resistance attribute.

TFE/P (Tetra Fluoro Ethylene Propylene)

Some of the properties of this material is its ability to withstand chemicals and high temperature settings. It also has good electrical resistance. Has excellent insulating properties and high stability even when subjected to high temperature.

PTFE (Poly Tetra Fluoro Ethylene) 

This material has non-stick properties or has a low coefficient of friction. It also exhibits resistance to chemicals, wears, light, and heat (low and high temperatures).  It is chemically inert meaning it does not react with chemicals. In terms of electrical attributes, it has good insulating properties.

HNBR (Hydrogenated Acrylonitrile Butadiene Rubber)

HNBR can resist a wide range of chemicals and also has high tensile strength. Its thermal equilibrium property allows it to prevent failure under heat strain.

It has the ability to retain its properties even after being subjected to chemicals and heat for a prolonged period of time. Compared to normal nitrile rubber, it is far better in resisting oxidation and abrasion. It is incompatible with strong acids, ozone, benzene, trichloroethylene, and solvents like ketones to name a few.


It can withstand temperatures ranging from 230℃ to 300℃ and is used in environments that have close contact with UV and ozone.

High Temperature O rings

  • It can withstand high-temperature environments
  • Able to combat high-pressure conditions so it can contain the fluid or gas that is kept inside the tanks or pumps.
  • Stress resistant so it can withstand a lot of tension applied.
  • Handle high volumes of fluid.
  • Resistant to chemicals such as oils and fuels.
  • Has good electrical resistance thus having good insulating properties as well. It prevents the occurrence of an electrical shock, therefore, protecting the equipment.
  • Corrosion resistance prevents the formation of rust
  • High tensile strength allows the O-ring to be stretched without damaging it.
  • A low coefficient of friction prevents damage to the equipment by minimizing wear and tear due to contact with moving parts.


  • Easy to install. No in-depth training is required for the personnel who will perform the installation.
  • Protects the equipment by preventing leakage, wear and tear, thus prolonging the life of the equipment and its parts.
  • Help avoid safety incidents in the workplace because it can withstand high-pressure settings.
  • Avoids shock in equipment because of its good insulating properties
  • Saves the company a lot of money on maintenance costs because of its ability to withstand stress.
  • Prevents early degradation of equipment because of its high heat resistance.


  • High temperature O rings are used designed to withstand even the harshest environments, making them perfect for use in airplanes and other high-pressure applications.
  • They are often found in hybrid vehicles where they provide an extra layer of protection against leakage.
  • Used in oil and gas manufacturing companies to prevent leakage of oil.
  • Because they can handle high volumes of fluid without any problems, high-temperature O-rings are often used on pumps.
  • Used by manufacturing companies and transport sectors because of its ability to withstand extreme temperatures.
  • In cases where low contamination settings are required (i.e. vacuum operations)

Since our high temperature O rings are mostly made of fluoro rubber or silicone, you can rest assured that your equipment will stay safe and leak-free

With their high-quality construction, these high temperature O rings can withstand even the most intense conditions. So go ahead and put them to the test!

Our rings are made from tough, heat-resistant materials that can withstand extreme temperatures, making them ideal for use in a variety of industrial and transportation applications.

Therefore, it is critical to choose the correct material for high-temperature O-rings to prevent mechanical and electrical failures in the equipment.

Don’t let your business suffer from a faulty o-ring, consider getting Yoson’s high-temperature O-rings.

Contact our technical team to guide you in choosing the right high temperature o-rings for your applications.

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