O-Rings
O-rings are essential sealing components used in a wide range of industrial applications, providing reliable protection against leaks and contamination. These circular elastomer seals are designed to fit into grooves and create a tight seal between two or more surfaces, ensuring optimal performance in hydraulic, pneumatic, and fluid-handling systems. Available in various materials, sizes, and durometers, O-rings offer excellent resistance to extreme temperatures, chemicals, and pressure, making them a versatile solution for demanding environments.
At OneMonroe, we provide high-quality O-rings engineered to meet industry standards and specific application requirements. Whether you need standard or custom O-rings, our selection includes a variety of materials such as Nitrile (Buna-N), Viton, EPDM, and Silicone to ensure compatibility with different fluids and operating conditions. Explore our O-ring attributes to find the right sealing solution for your application.
O-Rings
- Material: O-rings are made from different elastomers, like Nitrile (Buna-N), Viton, EPDM, Silicone, and Fluoroelastomers, chosen based on compatibility with the environment (e.g., temperature, chemicals).
- Size: Defined by inner diameter, outer diameter, and cross-sectional thickness. Accurate sizing is crucial for proper sealing and pressure handling.
- Inner Diameter: The measurement from one inner edge of the O-ring to the other. This diameter must match the diameter of the groove or the shaft it is intended to seal around for an effective fit.
- Outer Diameter: The total diameter from one outer edge to the other, which determines the overall size and ensures compatibility with the groove or housing dimensions.
- Cross-Sectional Thickness: The thickness of the material between the inner and outer diameters, also known as the "O-ring width." This measurement affects the sealing pressure and is crucial for maintaining an effective seal under various conditions.
- Hardness (Durometer): Measured on the Shore A scale, hardness typically ranges from 40 to 90. Higher hardness is used for applications with high-pressure requirements, while softer O-rings are suited for lower pressure or static applications.
- Temperature Range: The operating temperature varies by material. For instance, Silicone O-rings have high-temperature tolerance, while EPDM works well in cold environments.
- Chemical Resistance: Different materials resist certain chemicals better than others. For example, Viton offers high resistance to oils and fuels, while EPDM is suitable for water and steam.
- Pressure Tolerance: Certain materials and hardness levels handle higher pressures, which is essential in dynamic applications like hydraulics.
- Compression Set: Refers to the O-ring’s ability to maintain shape after compression. Low compression set is ideal as it allows the O-ring to maintain its seal over time.
- Tear and Abrasion Resistance: Some applications, especially dynamic ones, require O-rings with high tear and abrasion resistance to withstand repeated motion and friction.
- Permeability: For applications requiring airtight seals, low gas permeability is essential, particularly in environments with high pressure or vacuum.
- FDA/Medical Grade Certification: Some O-rings meet standards for food, beverage, or medical applications and are manufactured from materials approved by regulatory bodies like the FDA.