An Overview of O-Ring Media cover image

An Overview of O-Ring Media

Kaitlyn ColliganKaitlyn Colligan avatar

Kaitlyn Colligan

3 minute read

When it comes to industrial filtration, o-rings play a critical role in ensuring effective sealing and preventing leaks. The choice of o-ring media is vital to ensure compatibility with operating conditions and the fluids or chemicals involved. Whether you are in the chemical, pharmaceutical, food and beverage, or any other industry that requires reliable filtration solutions, understanding o-ring media is essential. Join us as we delve into the world of o-ring media, exploring its various types, unique features, and wide range of applications.

BUNA-N (Nitrile-butadiene rubber)

BUNA-N o-rings are known for their excellent resistance to oils, fuels, and hydrocarbon-based fluids. They are widely used in automotive, oil and gas, and general industrial applications. BUNA-N o-rings offer good chemical resistance, perform well within a moderate temperature range (-40°C to +120°C or -40°F to +250°F), and provide reliable sealing properties.

Viton (Fluoroelastomer)

Viton o-rings are highly resistant to a wide range of chemicals, solvents, oils, fuels, acids, and bases. They are commonly used in applications that involve harsh chemical environments, such as chemical processing, aerospace, and automotive industries. Viton o-rings exhibit excellent temperature resistance, typically performing well within a range of -20°C to +200°C or -4°F to +392°F, and offer exceptional durability and longevity.


Silicone o-rings are known for their versatility and wide temperature range. They can withstand both high and low temperatures (-70°C to +230°C or -94°F to +446°F), making them suitable for various applications. Silicone o-rings possess excellent flexibility, elasticity, and electrical insulation properties, making them a popular choice for applications involving electronic components and extreme weather conditions.

Teflon (PTFE)

Teflon o-rings, or PTFE o-rings, are chemically inert and exhibit outstanding resistance to corrosive chemicals, solvents, acids, and bases. They are commonly used in industries such as chemical processing, pharmaceuticals, and food processing. Teflon o-rings can handle high temperatures (-200°C to +260°C or -328°F to +500°F) and offer low friction, excellent lubricity, and reduced wear and tear.

EPDM (Ethylene Propylene Diene Monomer)

EPDM o-rings excel in outdoor applications and offer remarkable resistance to weathering, ozone, and UV exposure. They are commonly used in HVAC systems, outdoor equipment, and applications involving water and steam. EPDM o-rings perform well within a temperature range of -55°C to +150°C or -67°F to +302°F, providing reliable sealing and durability.

Teflon-Encapsulated Viton

Teflon-encapsulated Viton o-rings combine the chemical resistance of Teflon with the sealing properties of Viton. They offer excellent chemical resistance, enhanced durability, and reliable sealing performance. Teflon-encapsulated Viton o-rings typically perform well within a temperature range of -20°C to +200°C or -4°F to +392°F, providing a versatile solution for challenging applications.

Remember, when selecting the right o-ring material, consider factors such as chemical compatibility, temperature range, application requirements, and budget constraints. offers a wide range of o-ring materials, ensuring you find the perfect solution for your industrial filtration needs.

Contact us today to explore our diverse selection of o-ring media and leverage our expertise in industrial filtration. Trust as your reliable partner, dedicated to delivering high-quality products and exceptional customer service.

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