At Arizona Sealing Devices, we offer a wide selection of O-rings with different cross-sections, sizes, and styles to suit a range of applications. With so many options available, we are here to help you determine the best material for your application.

Silicone is a superior material for sealing devices like O-rings. It is ideal for static sealing applications in high-temperature environments and has exceptional flexibility and resistance to fatigue. Silicone is exceptionally durable and can resist environmental factors like UV rays, oxygen, and ozone exposure. The unique properties of silicone can also be adjusted or enhanced to deliver improved performance when necessary.

What Is a Silicone O-Ring?

Made from elastomers, O-rings are molded into a ring shape and bear a circular cross-section. Depending on the application, O-rings can be customized with unique cross-sections such as L- or T-shapes. They can also come in a cord-like solution made of plastic or similar materials. The cord can be cut to length and connected at both ends for a custom fit.  These versatile components are used in many static and dynamic applications to seal liquids and gases. Silicone is an ideal material for O-rings, offering various characteristics to improve performance, including:

  • Fungal growth resistance
  • UV, oxygen, and ozone resistance
  • Withstands extreme temperatures
  • Weather resistance
  • Withstands oil and grease from plant or animal sources
  • Electrically insulating
  • Flexible
  • Resists compression

Silicone can withstand temperatures between -75° and 450° F and can be formulated to meet several requirements, including compliance with FDA, Canada AG, 3-A, USDA, and USP Class VI standards. Silicone O-rings can have a hardness between 30 and 80 shore A Durometers.

How Silicone O-Rings Work

Silicone O-rings are activated by pressure to form a seal. They can effectively seal under high pressures and begin to deform as pressure is applied, pressing the silicone ring against the gland walls or seal joints. The seal provides a mechanical barrier to block fluids from entering the seal when pressurized.

Silicone Components & Properties

The term silicone describes a family of polymers made from synthetic compounds consisting of repeating units of siloxane or polysiloxane. Silicone rubber’s properties make it a generally non-reactive and stable material, allowing it to resist a range of harsh conditions. Silicone does not become brittle at low temperatures and can withstand high temperatures. It can perform in demanding applications, and its properties make it ideal for medical devices, electronics, and food storage applications.

Silicone O-Rings From Arizona Sealing Devices

Silicone is an ideal material for sealing devices like O-rings. The material resists a wide range of environmental factors. It is flexible, insulating, and ideal for extreme temperatures, making it suitable for many different industries and applications. Silicone grades can also be safe for medical and food uses and are recognized by organizations like the FDA and USDA.

At Arizona Sealing Devices, we offer silicone O-rings in a range of sizes and styles. Our sealing experts can help you find the ideal sealing solution for your application and have experience working with medical, transportation, electronics, oil and gas, chemical processing, water systems, food production, and various other industries. Our goal is to fully satisfy your needs with on-time delivery, affordable products of the highest quality, and exceptional customer service. Contact us to learn more about our silicone O-rings today.