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Certifications ISO 9001:2015 Certified Manufacturing

Heavy-Duty Buna-N Seals for Offshore & Onshore Applications

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 (Durometer)
  • Operating temperature range
  • Size Standard
  • Pressure Rating
  • Application environment
  • Quality Certification
  • MOQ
  • Delivery Time
  • Package
  • 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 seal, rubber o ring
Temperature
20-100°c
Application
oilfield, Pipeline Seals, Cylinder Seal, Oil and Gas Industry
Size
Metric sizes
Model number (Specification)
AS568 and ISO3601 Standard
Place of origin
China, Shanghai
Product description

Product details

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.

Our company welcomes samples for customer inspection. We also accept customer trials before purchasing bulk orders. If you need samples, please contact our sales department for consultation.

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.

While visual identification is difficult (most seals are black), Buna-N is generally identified by its flexibility and characteristic "rubbery" smell. For mission-critical applications, we recommend purchasing from a trusted manufacturer like us to ensure you receive a certified material batch with full traceability.
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 21 fields
Type
gasket, O-ring, rubber seal, rubber o ring
Temperature
20-100°c
Application
oilfield, Pipeline Seals, Cylinder Seal, Oil and Gas Industry
Size
Metric sizes
Model number (Specification)
AS568 and ISO3601 Standard
Place of origin
China, Shanghai
Hardness (Durometer)
60 Shore A to 90 Shore A
Operating temperature range
40°C to +120°C (-40°F to +248°F)
Size Standard
AS568, Metric, ISO 3601, BS 1806
Pressure Rating
Up to 5,000 PSI (depending on durometer and backup rings)
Application environment
Downhole, Wellhead, Pipeline, and Offshore Rig
Quality Certification
ISO 9001:2015 Certified Manufacturing
MOQ
5000pcs
Delivery Time
10-20days
Package
Plastic Bag Packing+Carton
Selling Units
Single item
Single package size
35X35X35 cm
Single gross weight
0.008 kg
Color (Product option)
colors
Material (Product option)
Silicone, 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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