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CR Rubber

CR rubber, also known as Chloroprene rubber or Neoprene, is a synthetic rubber that is used for its properties of resistance to oil, chemicals, and ozone, as well as good weather resistance.

Resistance to Oil, Chemicals, and Ozone
CR rubber is highly resistant to oil, chemicals, and ozone, making it ideal for use in applications that involve exposure to these substances.
Good Mechanical Properties
CR rubber has good mechanical properties, including high tensile strength, tear resistance, and abrasion resistance.
Low Gas Permeability
CR rubber has low gas permeability, making it suitable for use in applications where air or gas tightness is required.
Good Weatherability
CR rubber can withstand exposure to sunlight, heat, and weather conditions without degrading or losing its physical properties.
Flame Resistance
CR rubber is inherently flame resistant, making it ideal for use in applications that involve exposure to heat or flames.
Good Electrical Insulation
CR rubber has good electrical insulation properties, making it useful for applications that require insulation from electrical current.
Flexibility
CR rubber is flexible and can be easily molded into different shapes and sizes.
Aging Resistance
CR rubber exhibits good aging resistance and can maintain its properties over an extended period of time.
Good Adhesion
CR rubber has good adhesion properties, making it suitable for use in applications that require bonding with other materials.

Pros:

  • Excellent resistance to oils, chemicals, and ozone.
  • Good mechanical properties such as high tensile strength, good tear resistance, and high resistance to compression set.
  • Good weathering resistance, making it suitable for outdoor applications.
  • Good flame resistance, making it suitable for applications that require fire resistance.
  • Good adhesion to a variety of substrates, including metals and plastics.
  • Good resistance to water and humidity.

Cons:

  • Limited high temperature resistance compared to some other elastomers.
  • Not as resistant to fuels and solvents as some other elastomers.
  • Poor resistance to concentrated acids and bases.
  • Can be more expensive than some other elastomers.
  • Limited availability in certain grades and sizes.
  • May be less environmentally friendly than some other elastomers.

CR (Neoprene) vs. SBR

Chemical Resistance
CR rubber has better resistance to oils, fuels, and other chemicals than SBR rubber. SBR rubber is not recommended for use with oils and solvents.
Temperature Range
CR rubber has better temperature resistance than SBR rubber. CR can withstand temperatures up to 120°C, while SBR has a limited temperature range of -40°C to 100°C.
Flame Retardancy
CR rubber is inherently flame-retardant, while SBR rubber is not.
Weather Resistance
CR rubber has better weathering resistance than SBR rubber, making it more suitable for outdoor applications that require good resistance to UV radiation, ozone, and other environmental factors.
Cost
SBR rubber is less expensive than CR rubber, making it a popular choice for applications where cost is a significant factor.

CR rubber is a better choice for applications that require good resistance to oils, fuels, chemicals, and weathering, as well as flame retardancy. SBR rubber is a better choice for applications that require good mechanical properties at a lower cost.

CR (Neoprene) vs. EPDM

Chemical Resistance
EPDM rubber has better chemical resistance than CR rubber, particularly against acids, bases, and ozone. CR rubber is more resistant to oils and fuels.
Temperature Range
EPDM rubber can withstand a wider range of temperatures than CR rubber. EPDM rubber can handle temperatures ranging from -50°C to +150°C, while CR rubber can handle temperatures ranging from -40°C to +120°C.
Physical Properties
EPDM rubber has excellent physical properties such as high tensile strength, good tear resistance, and excellent elongation properties, while CR rubber has good physical properties such as high resistance to abrasion and tearing, and good resilience.
Electrical Insulation
EPDM rubber has better electrical insulation properties than CR rubber, making it suitable for electrical applications.
Weather Resistance
EPDM rubber has excellent weather resistance, ozone resistance, and UV resistance, while CR rubber has good weather resistance but is less resistant to ozone and UV radiation.

EPDM rubber is more suitable for applications that require good weather resistance, chemical resistance, and electrical insulation, while CR rubber is more suitable for applications that require good resistance to oils and fuels, and high resistance to abrasion and tearing.

CR (Neoprene) vs. NBR (Nitrile)

Chemical Resistance
NBR rubber has better resistance to oils, fuels, and chemicals than CR rubber, while CR rubber has better resistance to ozone, weathering, and some acids.
Temperature Range
Both NBR and CR have a rough temperature range from -40°C to +120°C.
Physical Properties
CR rubber has good physical properties such as good tear resistance, good compression set, and good resilience, while NBR rubber has excellent mechanical properties such as high tensile strength, good tear resistance, and high resistance to abrasion and wear.
Flame Resistance
CR rubber has good flame resistance, making it suitable for applications where fire resistance is important, while NBR rubber is less flame-resistant.

NBR rubber is more suitable for applications that require good resistance to oils, fuels, and chemicals, and high mechanical properties, while CR rubber is more suitable for applications that require good ozone and weather resistance, good compression set, and good flame resistance.

CR (Neoprene) vs. NR (Natural)

Temperature Range
NR rubber can handle lower temperatures than CR rubber. NR rubber can handle temperatures ranging from -60°C to +80°C, while CR rubber can handle temperatures ranging from -40°C to +120°C.
Chemical Resistance
CR rubber has better resistance to oils, solvents, and ozone than NR rubber, while NR rubber has better resistance to acids and bases.
Electrical Insulation
NR rubber has good mechanical properties such as high tensile strength, excellent tear resistance, and high resilience, while CR rubber has good mechanical properties such as high tensile strength, good tear resistance, and high resistance to compression set.
Resistance to Environmental Factors
CR rubber has better resistance to weathering and UV radiation than NR rubber.

CR rubber is more suitable for applications that require good resistance to oils, solvents, and ozone, and where higher temperatures may be encountered, while NR rubber is more suitable for applications that require good resistance to acids and bases, and where lower temperatures may be encountered.

CR (Neoprene) vs. FKM (Viton)

Chemical Resistance
FKM rubber has excellent resistance to a wide range of chemicals, fuels, and oils, including high concentrations of acids and bases, while CR rubber has good resistance to oils, chemicals, and ozone, but is not as resistant to fuels and solvents as FKM rubber.
Temperature Range
FKM rubber can handle a wider range of temperatures than CR rubber. FKM rubber can handle temperatures ranging from -20°C to +250°C, while CR rubber can handle temperatures ranging from -40°C to +120°C.
Physical Properties
FKM rubber has excellent mechanical properties such as high tensile strength, good tear resistance, and good compression set, while CR rubber has good mechanical properties such as high tensile strength, good tear resistance, and high resistance to compression set.
Cost
FKM rubber is generally more expensive than CR rubber, making it a more premium option for certain applications.
Resistance to Environmental Factors
FKM rubber has better resistance to weathering, UV radiation, and ozone than CR rubber.

FKM rubber is more suitable for applications that require excellent resistance to chemicals, fuels, and oils, and where a wide range of temperatures may be encountered, while CR rubber is more suitable for applications that require good resistance to oils, chemicals, and ozone, and where lower temperatures may be encountered.

CR (Neoprene) vs. MQ (Silicone)

Chemical Resistance
MQ rubber has excellent resistance to a wide range of chemicals, solvents, and oils, while CR rubber has good resistance to oils, chemicals, and ozone, but is not as resistant to solvents as MQ rubber.
Temperature Range
MQ rubber can handle higher temperatures than CR rubber. MQ rubber can handle temperatures ranging from -55°C to +200°C, while CR rubber can handle temperatures ranging from -40°C to +120°C.
Physical Properties
CR rubber has good mechanical properties such as high tensile strength, good tear resistance, and high resistance to compression set, while MQ rubber has excellent mechanical properties such as high tensile strength, good tear resistance, and high elasticity.
Resistance to Environmental Factors
MQ rubber has better resistance to weathering, UV radiation, and ozone than CR rubber.

MQ rubber is more suitable for applications that require excellent resistance to chemicals, solvents, and high temperatures, and where high elasticity is required, while CR rubber is more suitable for applications that require good resistance to oils, chemicals, and ozone, and where lower temperatures may be encountered.

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