Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of nbr rubber o-ring in China. If you're going to buy nbr rubber o-ring made in China, welcome to get more information from our factory. We also accept customized orders.
Material & Oil Resistance
This O-ring is manufactured from high-quality NBR (Nitrile Butadiene Rubber), a synthetic rubber renowned for its exceptional resistance to petroleum-based oils, fuels, and hydraulic fluids. It does not swell, degrade, or lose its sealing properties even after prolonged contact with these media. This makes it the preferred choice for automotive engines, hydraulic cylinders, and industrial machinery. The material also offers good resistance to water and greases. Its balanced formulation ensures reliable performance across a wide range of operating conditions, providing a durable and cost-effective sealing solution.
Sealing Performance & Compression Set
The NBR O-ring is engineered to provide a tight, reliable seal in both static and dynamic applications. Its precision-molded circular cross-section ensures uniform contact pressure against the sealing surfaces, effectively preventing leakage of liquids and gases. The material exhibits low compression set, meaning it recovers its original shape after being compressed, ensuring long-term sealing effectiveness. This property is critical for applications involving repeated pressure fluctuations or thermal cycling. The O-ring maintains its sealing force over time, reducing maintenance costs and preventing costly downtime in industrial systems.
Temperature & Chemical Resistance
This NBR O-ring performs reliably across a wide temperature range, typically from -30°C to +100°C. It offers good resistance to a variety of chemicals, including water, alcohols, and many hydraulic fluids. However, it is not recommended for use with ketones, esters, or strong acids. For applications requiring higher temperature or chemical resistance, alternative materials such as FKM (Viton) or silicone are available. The NBR compound is carefully formulated to balance elasticity, hardness, and chemical stability, ensuring consistent performance in demanding environments.
Dimensions & Standards
Our NBR O-rings are available in a comprehensive range of standard sizes, including metric and inch series, to fit virtually any groove or housing. They are manufactured to strict dimensional tolerances, ensuring a precise fit and reliable sealing. Custom sizes and cross-sections can also be produced upon request. The O-rings are available in standard black, as well as other colors for identification purposes. Each batch is inspected for hardness, tensile strength, and compression set to guarantee consistent quality and performance.
Application Scope
This versatile NBR O-ring is widely used across numerous industries for sealing applications. In the automotive sector, it is found in engines, transmissions, power steering systems, and fuel lines. In industrial hydraulics, it seals cylinders, valves, pumps, and fittings. It is also used in household appliances, plumbing fixtures, and pneumatic tools. Its broad compatibility with oils, water, and greases makes it a reliable and cost-effective solution for general sealing needs in both static and dynamic applications.
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