Ace Seal is a global manufacturer of custom o-rings, seals, gaskets and other molded rubber & plastic components

Custom O-Rings

Custom O-rings are recommended when standard AS568 or common metric sizes do not work within your application parameters. Ace Seal specializes in standard and custom O-rings for a range of industries. We can create custom O-rings to fit your unique requirements for size, durometer, color, and material.  

Custom O-ring Manufacturer for Any Industry

Based in Silicon Valley, Ace Seal is a leader in reliable sealing solutions for our customers around the world. You can find our custom O-rings used in nearly any industry, from aerospace to biotech to gas & oil, medical, military, semiconductor, solar, and more. With a range of customization capabilities, Ace Seal is the right choice for your O-ring needs. Contact us today discuss your custom application.  

Custom Rubber O-Rings for Specialty Sealing Applications

O-rings are a critical component of many precision engineered products, so it’s important to ensure they are designed to fit the exact requirements of your application. Our custom O-rings are manufactured to hold up in a variety of pressure, tolerance, and temperature ranges. Additional benefits include:

  • Easy to install and maintain
  • Reduced equipment downtime
  • Cost-effective
  • Extended service life
  • Completely customizable for maximum performance

Selecting the Right Size & Material for Your Custom O-Rings

When O-rings are properly designed and installed, they will provide reliable, long-lasting performance without the need for constant adjustments. When improperly designed or installed, O-rings may degrade or fail prematurely, resulting in costly downtime and repairs. There are several considerations to keep in mind to ensure your custom O-rings perform optimally even in the most challenging applications.

  • Size: It’s important to ensure the correct size O-ring is used in order to maintain the integrity and safety of the system. You can do this by measuring the groove dimensions where the O-ring will be seated to determine the exact sizing required.
  • Temperature range: Different elastomers have unique temperature tolerances. Make sure you carefully evaluate the temperature requirements of your application to prevent the O-ring from cracking or hardening and compromising its effectiveness
  • Chemical compatibility: O-rings are often used in environments where they’re exposed to various chemicals, oils, fuels, solvents, or acids. A chemically compatible material selection will prevent issues like swelling, degradation, or failure.
  • Durometer: Durometer, or hardness, determines the O-ring’s flexibility, durability, and resistance to compression. Making sure you have the appropriate durometer is crucial to ensuring your O-rings properly conform to the area they’re meant to seal.

Find the Elastomer Best Suited to Your Custom Static or Dynamic O-Rings

While some materials are more resistant to heat or chemicals, others may offer better flexibility or durability. Choosing the right material will ensure your O-ring performs as it should and maintains its integrity over a long period of time. Refer to our Material Properties Comparison Chart to find the elastomers best suited to your requirements. Common options include:

Custom Molded O-Rings: How Are They Made?

Rubber O-rings are typically made by various molding processes, each with key differences in their methods and resulting properties. The manufacturing method best suited to your project depends on factors such as volume, cost, material selection, and required tolerances.

Custom Injection Molded O-Rings for Dynamic Applications

Injection molding is the process of heating a material to a liquid state and injecting it into a mold cavity under high pressure. Injection molded O-rings tend to have a high degree of precision and consistency in their size and shape. This is the best option for smaller volumes of large, non-standard dynamic O-rings.

Custom Compression Molded O-Rings for Static or Dynamic Applications

Compression molding involves compressing pre-cut material in a mold cavity to form the desired shape. This process is typically the most cost-effective option and is best suited to static or dynamic applications that require a high volume of smaller-sized, non-standard O-rings.  

Leading Manufacturer of Custom Rubber O-Rings, Gaskets, & Seals

Ace Seal is a leading worldwide provider of custom sealing solutions and rubber components for a range of industries. We will work with your unique specifications to create the custom rubber O-rings you require. Contact us for more information or request a quote today.

Ace Seal O-Rings, Seals, Gaskets

We stock a wide variety of seals that are available the same day

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