Special Performance NBR O-Rings | Custom Functional Grades for Industrial Sealing Applications

Product Overview

The Special Performance NBR O-Rings are designed as a high-grade sealing solution for demanding industrial environments where resistance to oil, fuel, grease, and mechanical wear is critical.

This product line is available in multiple standard and custom sizes, allowing it to be used across a wide range of sealing applications without changing the core material performance. Regardless of dimensions, all sizes share the same advanced compound formulation and performance characteristics.

Size & Application Flexibility

Different sizes of this NBR O-ring series are engineered to fit various groove dimensions and sealing requirements in mechanical systems.

• Small sizes are typically used in precision instruments, valves, and compact hydraulic components
• Medium sizes are suitable for general machinery, pumps, and automotive sealing systems
• Large sizes are designed for heavy-duty industrial equipment and high-pressure sealing environments

Despite size differences, all variants maintain consistent resistance to oil, fuel, abrasion, and temperature fluctuations.

Key Features

Unified Performance Across All Sizes

All sizes in this product line are made from the same high-performance rubber compound, ensuring consistent sealing behavior and reliability regardless of dimension.

• Consistent sealing performance across all sizes
• Uniform resistance to oils, fuels, and lubricants
• Stable operation under pressure and temperature variations
• Long service life independent of size selection

Core Material Advantages

• Excellent resistance to grease, lubricants, diesel fuel, and oils
• High abrasion and water wear resistance
• Peroxide cured, sulfur-free formulation for improved durability
• Suitable for oil and fuel filtration system applications
• Compatible with silicone-based media environments

Advanced Performance Properties

• High wear resistance up to 300,000–500,000 cycles
• High elasticity with low compression set
• Resistant to molybdenum disulfide (MoS₂) environments
• Low temperature resistance down to -40°C / -55°C
• Excellent ozone and aging resistance
• PAHS compliant and halogen-free eco-grade options available
• High tensile strength for heavy-duty sealing applications
• Electrical insulation and high-voltage resistance capability
• FDA food-grade options available upon request

Specifications

• Material: NBR (Nitrile Butadiene Rubber)
• Hardness: Customizable Shore A (typically 50–90A)
• Temperature Range: -30°C to +120°C
• Function Grades: Standard / Oil-resistant / High-durability / Custom
• Color: Black (standard), custom available
• Shape: O-ring circular cross-section
• Application Pressure: Low to high-pressure sealing systems

Applications

• Hydraulic and pneumatic systems
• Automotive engine and fuel systems
• Industrial machinery and pumps
• Valves, fittings, and mechanical assemblies
• Mechanical equipment joints
• Oil, fuel, and filtration equipment