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Wholesale Nitrile (NBR) O-Rings | Bulk Industrial Sealing Supply

Available for enquiry 0.0 · 0 reviews
USD

$ 20.00 20.0 USD $ 20.00

Not Available For Sale

Minimum order quantity: 5000 Units
  • Type
  • Temperature
  • Application
  • Size
  • Model number (Specification)
  • Place of origin
  • Hardness
  • Certificate
  • MOQ
  • Packing
  • Service
  • Selling Units
  • Single package size
  • Single gross weight
  • Color (Product option)
  • Material (Product option)
  • Style (Product option)

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Key attributes

View all
Type
gasket, O-ring, rubber o ring
Temperature
20-100°c
Application
Machine, oilfield, Pipeline Seals, Cylinder Seal, Oil and Gas Industry
Size
accept custom sizes, Metric sizes
Model number (Specification)
AS568 and ISO3601 Standard
Place of origin
China, Shanghai
Product description

Highlights at a glance

  • Our high-performance Buna-N (Nitrile) O-rings are engineered specifically to meet the rigorous demands of the oil and gas industry. Known for their exceptional resistance to petroleum-based oils, fuels, and hydraulic fluids, these NBR seals serve as a reliable and cost-effective solution for critical sealing applications. As a dedicated manufacturer, we ensure our Buna rubber O-rings provide a superior balance of mechanical properties, offering excellent compression set resistance and high tensile strength to maintain seal integrity in harsh oilfield environments.
  • Designed for both static and dynamic sealing, our Buna-N O-rings are available in a wide range of durometers, including 70 Shore A and 90 Shore A, to withstand varying pressure levels in downhole tools, valves, and pipeline components. These nitrile rubber seals are precision-molded to comply with international standards such as AS568 and metric specifications. Their robust construction makes them ideal for use in drilling equipment, gas compressors, and offshore platforms, where resistance to abrasion and industrial chemicals is paramount for preventing costly leaks and equipment downtime.
  • As a leading industrial seal manufacturer, we utilize advanced production technology and rigorous quality control protocols to deliver Buna rubber O-rings that exceed client expectations. We understand the high-stakes nature of energy infrastructure, which is why our nitrile sealing solutions undergo extensive testing for durability and thermal stability. Beyond standard sizes, we offer customized sealing solutions tailored to your specific project requirements, ensuring rapid lead times and global shipping for refineries, petrochemical plants, and oilfield service providers worldwide.
    • Frequently asked questions

    Buna-N, also known as Nitrile (NBR), is the industry standard for oil and gas applications due to its exceptional resistance to petroleum-based oils, fuels, and hydraulic fluids. It offers an excellent balance of cost-effectiveness, high tensile strength, and superior compression set resistance, making it ideal for both static and dynamic sealing in oilfield equipment.

    Standard Buna-N O-rings generally perform reliably in temperatures ranging from -40°C to +120°C (-40°F to +248°F). For extreme cold or high-heat environments, we can provide specially formulated nitrile compounds to meet specific downhole or surface requirements.

    The choice depends on your application pressure. 70 Shore A is the standard for general-purpose sealing and offers better flexibility. However, for high-pressure oilfield applications (typically above 1,500 PSI), 90 Shore A is recommended to prevent extrusion and ensure seal longevity.

    Standard Buna-N has moderate resistance to H2S. For applications involving high concentrations of sour gas, we recommend high-nitrile content formulations or transitioning to specialized elastomers like FKM or HNBR, depending on the temperature and pressure profiles of your well.

    Yes. As a professional manufacturer, we produce Buna-N O-rings in all AS568 standard sizes, as well as a comprehensive range of metric sizes (ISO 3601). We also offer custom dimensions for proprietary oilfield tool designs.

    Buna-N is highly effective in high-pressure systems when paired with the correct durometer and clearances. For extreme pressures, we often recommend using Nitrile O-rings with backup rings to prevent seal extrusion and maintain system integrity.

    Choose Nitrile (NBR) when cost-effective oil and fuel resistance is the priority. Use FKM if you need higher temperature and chemical resistance. Avoid using Nitrile with EPDM-specific applications, as Nitrile will degrade quickly when exposed to brake fluids or high concentrations of ozone and weathering.
    Description images
    Product detail
    Product detail
    Product detail
    Product detail
    Packaging and fulfilment
    • Step 1

      Payment and order readiness

      Minimum order: 5000 Units

      Payment terms, specifications, and order details are confirmed before preparation begins.

    • Step 2

      Preparation

      10 days

    • Step 3

      Packaging and dispatch

      Ocean freight via Maersk · Approx. shipping fee: $ 0.84 for 1 unit · Transit time: Est. 17-24 days

      Final packing, freight, and delivery dates are confirmed before dispatch.

    Technical specifications
    Other details 17 fields
    Type
    gasket, O-ring, rubber o ring
    Temperature
    20-100°c
    Application
    Machine, oilfield, Pipeline Seals, Cylinder Seal, Oil and Gas Industry
    Size
    accept custom sizes, Metric sizes
    Model number (Specification)
    AS568 and ISO3601 Standard
    Place of origin
    China, Shanghai
    Hardness
    70-90 Shores a
    Certificate
    ISO9001:2015
    MOQ
    5000pcs
    Packing
    Carton Box
    Service
    OEM.ODM.customized
    Selling Units
    Single item
    Single package size
    35X35X35 cm
    Single gross weight
    0.008 kg
    Color (Product option)
    Blue, Black, Orange, Yellow, Brown, Purple
    Material (Product option)
    EPDM, FKM, Rubber, PTFE, Silicone Rubber, PU, FFKM, hnbr, Nitrile Rubber
    Style (Product option)
    O Ring, rubber seal, rubber o ring
    Lead time
    10 days
    Minimum order
    5000 Units

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