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NBR Rubber Seals: High-Performance Oil-Resistant Solutions

How CTG Specializes in NBR Seal Manufacturing

CTG excels in manufacturing high-performance NBR (Nitrile Butadiene Rubber) seals, also known as Nitrile or Buna-N. Our advanced processing techniques and quality control systems ensure optimal performance in demanding oil-service environments. We leverage extensive expertise in NBR technology to deliver seals that meet rigorous industry standards.

What Are NBR Rubber Seals?

NBR rubber seals are engineered elastomer components featuring:
  • Superior hydrocarbon resistance
  • Excellent petroleum compatibility
  • Optimizable acrylonitrile content
  • High tensile strength
  • Strong wear resistance
  • Good compression set
  • Broad temperature range
  • Cost-effective performance

Understanding NBR Properties

NBR characteristics include:
  • Acrylonitrile (ACN) content: 18-50%
  • Higher ACN = Better oil resistance
  • Lower ACN = Better low-temperature properties
  • ASTM D2000/SAE J200 classifications
  • Multiple cure system options
  • Various cross-linking mechanisms
  • Broad processing window

Industries Served with NBR Seals

  • Hydraulic Systems
  • Automotive
  • Aerospace
  • Oil & Gas
  • Food Processing
  • Industrial Equipment
  • Mining Operations
  • Power Generation

End Applications for NBR Seals

NBR seals excel in applications requiring:
  • Oil resistance
  • Fuel compatibility
  • Hydraulic service
  • Grease exposure
  • Dynamic sealing
  • Wear resistance
  • Mechanical strength
  • Cost efficiency

NBR Rubber Seals Frequently Asked Questions

What’s the difference between NBR and Nitrile rubber?
NBR and Nitrile are the same material – NBR is the technical designation for Nitrile Butadiene Rubber, also known as Buna-N.
We adjust the acrylonitrile (ACN) content from 18% to 50% to balance oil resistance with low-temperature flexibility for specific requirements.
Standard NBR compounds perform from -40°F to 250°F, with special formulations available for extended ranges.
Yes, we offer FDA-compliant NBR compounds suitable for food processing applications.
Yes, NBR provides excellent compatibility with most synthetic oils and lubricants.

Technical Specifications

NBR Properties:

  • ACN Content: 18-50%
  • Temperature Range: -40°F to 250°F
  • Oil Resistance: Excellent
  • Tensile Strength: High
  • Abrasion Resistance: Very Good
  • Compression Set: Good
  • Cost Effectiveness: Excellent
  • Processing: Versatile

Manufacturing Capabilities

Our NBR processing includes:

  • Precision Molding
  • Custom Compounding
  • ACN Content Optimization
  • Surface Engineering
  • Size Range Flexibility
  • Complex Geometries
  • Color Coding
  • Rapid Prototyping

Quality Control

We maintain:
  • ASTM D2000 Compliance
  • SAE J200 Classifications
  • Military Specifications
  • Industry Standards
  • FDA Requirements
  • Custom Specifications
  • ISO 9001
  • Material Certifications

Custom Solutions

We offer:
  • Application-Specific ACN Content
  • Custom Compound Development
  • Size Customization
  • Surface Treatments
  • Enhanced Properties
  • Specialized Testing
  • Prototype Development
  • Design Assistance

Experience the CTG Difference

Partner with CTG for your NBR sealing needs and benefit from:
  • 24/7 emergency manufacturing capability
  • Expert engineering support
  • Comprehensive material testing
  • ISO quality management system
  • Rapid prototyping services
  • Competitive pricing
  • Quick delivery options
Contact our technical team today at 800.299.1685 or email ctgsales@ctgasket.com for expert guidance on your NBR seal requirements.

24/7 Emergency Delivery Available

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TECHNICAL LIBRARY

For available materials, sizing, geometry, gland considerations and more, view our technical library.
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24/7 Emergency Delivery Available
For urgent needs call 800.299.1685