by DAWN

Ultimate Guide! Comparing Common Rubber Materials

1. Natural Rubber (NR)

NR comes from the latex of the rubber tree. It has high elasticity, toughness and excellent tensile strength.

Applications

  • Tires
  • Footwear
  • Industrial goods

Advantages and Disadvantages

  • Pros: Good mechanical properties, low cost
  • Cons: Poor resistance to ozone, UV, and chemicals

 

2. Synthetic Rubber

2.1 Styrene-Butadiene Rubber (SBR)

SBR is made of styrene and butadiene and has good wear resistance and aging resistance.

Applications

  • Tires
  • Conveyor belts
  • Shoe soles

Advantages and Disadvantages

  • Pros: Cost-effective, good wear resistance
  • Cons: Limited resistance to oil and solvents

2.2 Nitrile Butadiene Rubber (NBR)

NBR is a copolymer of butadiene and acrylonitrile with excellent oil and fuel resistance.

Applications

  • Automotive seals
  • Hoses
  • Gaskets

Advantages and Disadvantages

  • Pros: Superior resistance to oils and fuels
  • Cons: Reduced flexibility at low temperatures

2.3  Hydrogenated Nitrile Butadiene Rubber (HNBR)

HNBR is a highly saturated elastomer which is treated by special hydrogenation. Compared with NBR, the molecular structure of HNBR contains a small amount or no carbon-carbon double bonds. Click here to know more about NBR and HNBR comparison.

Applications

  • automotive manufacturing, oilfield drilling, aerospace, and defense

Advantages and Disadvantages

  • Pros: Excellent resistance to heat, oil, and chemicals. Superior mechanical properties
  • Cons: Higher cost compared to standard NBR

2.4 Ethylene Propylene Diene Monomer (EPDM)

EPDM is made of ethylene, propylene and diene components and has excellent weather resistance, ozone resistance and aging resistance.

Applications

  • Roofing membranes
  • Automotive weatherstripping
  • Garden hoses

Advantages and Disadvantages

  • Pros: Excellent weather and ozone resistance, good electrical properties
  • Cons: Poor resistance to petroleum-based fluids

2.5 Silicone Rubber (VMQ)

VMQ is composed of silicon, oxygen, carbon and hydrogen and has excellent temperature stability and flexibility.

Applications

  • Medical devices
  • Kitchenware
  • Automotive components

Advantages and Disadvantages

  • Pros: High temperature resistance, biocompatibility
  • Cons: Lower tensile strength, higher cos

3. Choosing the Right Rubber Material for Your Needs

Property NR SBR NBR HNBR EPDM VMQ
Tensile Strength High Medium Medium-High High Medium Medium
Elasticity High High Medium Medium-High Medium-High High
Abrasion Resistance Medium High Medium High Medium Medium
Oil Resistance Low Low High High Low Low
Chemical Resistance Low Low High High Medium High
Temperature Resistance Medium Medium Medium High High Very High
Weather Resistance Low Medium Low Medium Very High High
Cost Low Low Medium High Medium High

Case Studies and Examples

Dawn HNBR has been successfully used in timing belts, O-rings, gaskets, oil seals, etc.

Dawn is committed to providing high-quality HNBR, contact us to discuss technology and cooperation.

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