Custom NBR Rubber Molding Product
If NBR is the right material for your application, simply send us your drawings or samples. We’ll provide a quote and manufacture to your specifications.
Custom NBR Rubber Molding Solution
Zhongren specializes in custom-molded NBR rubber components for applications involving oil, fuel, and hydraulic fluid exposure. With strong formulation capabilities and manufacturing precision, we deliver cost-effective nitrile rubber parts that meet industry performance standards. NBR offers excellent resistance to oils, fuels, and hydraulic fluids, along with good mechanical strength and abrasion resistance, making it ideal for automotive, industrial, and fluid-sealing applications.
How Are NBR Rubber Parts Manufactured?
To meet diverse application needs, Zhongren offers a variety of molding methods for NBR rubber, depending on product complexity and volume requirements.
- NBR Compression Molding
- NBR Injection Molding
- NBR Transfer Molding
- NBR to Metal Bonding
Successful NBR molding requires careful control of cure time and mold temperature to maintain oil resistance, dimensional stability, and surface finish. Pre-compound selection is key for balancing hardness, flexibility, and performance.
Common Applications of NBR Rubber Parts
Due to its excellent resistance to oils, greases, and many industrial fluids, NBR is widely used in the automotive, machinery, and fluid-handling sectors.
- Oil seals and gaskets
- O-rings and washers
- Hydraulic and pneumatic seals
- Fuel system components
- Vibration dampers
- Hoses and tubing
- Pump and valve seals
Our Valued-Added Services
- Design and Engineering Support
- Material Testing and Certification
- Surface Finishing and Printing
- Assembly and Sub-Assembly
- Custom Packaging and Labeling
Advantages of NBR Rubber Molding
- Excellent resistance to oils, fuels, and hydraulic fluids
- Good mechanical strength and abrasion resistance
- Reliable performance from -30°C to +120°C
- Low cost and widely available
- Customizable for hardness and tensile strength
- Easy to mold and bond to metals or fabrics
Disadvantages of NBR Rubber Molding
- Limited resistance to ozone, weathering, and UV
- Not suitable for high-temperature continuous exposure
- Poor resistance to polar solvents, ketones, and esters
- Can become brittle at low temperatures
- May require additives or blends to enhance specific properties
FAQ with NBR Rubber Molding
How Does NBR Compare to EPDM or Silicone?
NBR excels in oil resistance but has lower weather, ozone, and heat resistance compared to EPDM and silicone.
Can NBR Be Used Outdoors?
Not ideal for prolonged outdoor use without UV stabilizers, as it can crack or degrade under ozone and sunlight.
Are There Different Grades of NBR?
Yes. The acrylonitrile content can be adjusted to improve oil resistance or flexibility depending on application needs.
Is NBR Safe for Use with Fuels?
Yes. NBR is one of the most common rubbers used in fuel systems, but chemical compatibility should always be confirmed.
