NBR Rubber Seals

Nitrile rubber (Nitrile Butadiene Rubber) is a very common material, and we can call it NBR, buna-n rubber, or buna rubber. It is an elastomer made of acrylonitrile and butadiene copolymers and is a synthetic rubber commonly used in various applications. This type of rubber is a common sealing product, which forms a seal between two surfaces and effectively prevents the entry of petrochemicals and oil pollution. This material has excellent oil resistance, heat resistance, and wear resistance, and it is often used in seals in automobile engine compartments.

Nitrile rubber has excellent oil resistance, heat resistance, and sealing properties. It is widely used in industrial fields such as automobile manufacturing, petrochemicals, and aerospace. okin Rubber can manufacture NBR rubber seals of different shapes, sizes, and lengths according to customer specifications and requirements, providing customized solutions for customers around the world.

Our factory has a strong manufacturing capacity, so we can provide customers with various thicknesses of nitrile rubber strips. We can ensure the highest quality standards and accurately customize rubber strip products for customers’ specific needs.

In addition, our entire foreign trade team is experienced and can answer your questions online. From the initial product consultation to the delivery and shipment, we will provide high-quality services and the best solutions. Customers from all over the world are welcome to visit our factory.

View All ⇊

Get a Quote

Industrial Nitrile Rubber Extrusions Anti-Oil

Double D Shape Nitrile Rubber Profiles Extrusion

Nitrile Rubber O Ring Cord

U Shape Extrusion NBR Nitrile Rubber Seal

Properties of NBR Rubber Seals

  • Excellent Oil And Chemical Resistance: When exposed to chemical solvents, solutions, or aggressive environments, the NBR rubber seals maintain their original properties.
  • Good flexibility and durability: High tensile strength and elasticity make NBR seals resilient. It can withstand harsh weather conditions and external impacts.
  • Excellent abrasion, wear and tear resistance: Highly flexible to easily converted into different shapes and size. This makes the NBR seals more durable to deal with wear and tear and last for longer service life.
  • Exceptional Sealing Properties: Good resistance to grease, hydrocarbons, and diluted acids. This provides the nitrile butadiene rubber with a tight seal to prevent water, air, and dust infiltration.

Parameters of Nitrile Rubber Strips

okin Rubber's nitrile rubber is available in various colors, sizes, hardness, and grades.

  • Color: Common colors include black, white, green, yellow, red, blue, gray, orange, etc. In addition to the above colors, we can also customize special colors according to customer requirements.
Nitrile-Rubber-Strips'-color
  • Thickness: 10 thicknesses (1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10) mm are available.
Nitrile-rubber-thickness-customization
  • Shape: We can produce nitrile rubber products in various shapes, such as round, square, rectangular, U-shaped, and O-shaped, to provide you with the most suitable products.
  • Temperature: Nitrile rubber strips can withstand temperatures between -25°℃ and +120℃.
  • Hardness: Nitrile rubber strips are a high-quality material, and the hardness range is generally between Shore A 30 and Shore A 90.
  • Strength: Nitrile rubber strips' tear resistance is generally good. Their tear strength can reach 40 N/mm or higher, and their maximum elongation is 400%.

If you need custom nitrile rubber strips, please contact us.

Applications of NBR Rubber Extrusion

okin Rubber has obtained IATF16949, ISO19001, and ISO14001 certifications. All our materials meet production standards.

Thanks to its superior oil and chemical resistance, the NBR seal is ideal for various applications and industries.

  • Seals, oil seals, hoses, and other parts required for automotive parts can all use nitrile rubber;
  • Nitrile rubber can be made into seals and o-rings for oil extraction equipment;
  • Nitrile rubber strips are used as seals for doors and windows to provide better sound insulation and effectively prevent the entry of water, dust, and insects;
  • Nitrile rubber parts that meet FDA standards are safer in specific environments and are mainly used in food processing and medical industries.

Automobile Industry


NBR rubber is widely used in the field of automobile manufacturing. Including automotive seals, oil seals, O-rings, pipes, hoses, suspension parts, and tires. Its resistance to oil and abrasion makes it ideal for automotive parts.

Industrial Seals


NBR rubber is widely used as a seal material in the industrial field. It is used to seal and isolate liquids, gases, and chemicals. It plays an important role in various mechanical equipment, valves, piping systems, storage tanks, and pumps.

Construction And Building Materials

NBR rubber is often used in the manufacture of waterproofing materials, weatherstrips, pipes, and fittings. It is weather and chemical-resistant. It is therefore suitable for both outdoor and indoor sealing and waterproofing applications.

Medical Devices


NBR rubber is used in the manufacture of gloves, catheters, seals, and tubing, among others. It can meet the requirements of the medical industry for material safety and reliability.

Nitrile-rubber-application

Why Choose Us As Your NBR Rubber Seals Manufacturer?

  • Advanced Technology: We employ cutting-edge NBR rubber seal manufacturing technology to ensure all NBR rubber seals are manufactured in line with industry standards and meet customer satisfaction. We have advanced production capabilities and can provide customers with different types of rubber strips. Since nitrile rubber has excellent oil, fuel, and grease resistance, these strips are usually used in the automotive, aerospace, and construction industries. okin Rubber produces nitrile washers, nitrile gaskets, nitrile seals, nitrile belts, etc., through fine processing to meet the needs of different industrial sectors.
  • Custom Service: We understand different people have various requirements and specifications. We offer custom NBR rubber strip services. In addition, our materials include closed-cell, open-cell, semi-closed-cell sponge, foam, and solid rubber. We also produce self-adhesive nitrile rubber, which customers require. You can choose single-sided or double-sided tape to meet customers' different needs.
  • Rich Expertise: We have been in the industry of NBR seals for more than 10 years. It allows us to learn more about customer needs, and produce the exact nitrile rubber seals. They can that meet customers’ needs, and ultimately serve our target groups.
  • Fast Delivery: okin Rubber products are quality tested by professionals to ensure that we only provide high-quality products. The delivery time is usually 5-7 working days, but it depends on the actual situation of product inventory, and the delivery time may vary.

FAQs About NBR Rubber

NBR rubber, also called Buna-N or NBR, is an elastomeric rubber composed of acrylonitrile and butadiene.

Nitrile rubber has an excellent temperature resistance, ranging from -40°C to 120°C (-40℉ - +248℉).

NBR rubber has high tensile strength ranging from 3.5 MPa to 21 MPa, and excellent elongation at break up to 700%.

Nitrile rubber is a rubber material copolymerized by diene and acrylonitrile. Acrylonitrile contains polar cyano groups, and the molecular interaction force of cyano groups is greater than the molecular interaction force of oil. This makes nitrile rubber resistant to erosion by mineral oil and other oils. The content of acrylonitrile directly affects its oil resistance. When the acrylonitrile content is higher, the oil resistance of nitrile rubber is better.

Nitrile rubber is safe. However, we should follow the correct and safe operating specifications during operation. Dust will be generated when processing nitrile rubber, so we should wear masks for protection. Store rubber strips correctly and avoid exposure to high temperatures or humid environments. When using nitrile rubber products, follow the product safety guidelines.

Nitrile rubber itself is not conductive. But we can make it conductive by adding conductive fillers to nitrile rubber. If you need conductive rubber seals, please communicate with professional rubber strip suppliers, and okin Rubber will provide you with specific materials that meet your requirements.

Learning Center

Popular search keywords:

Leave your message