RUBBER MATERIALS

BASE MATERIALS AVAILABLE

Natural Rubber

Natural Polyisoprene

Derived from trees, Natural Rubber offers excellent physical properties, including abrasion, gouging, and cut growth resistance. Used for producing rubber bands, it also exhibits great rebound elasticity and flexibility.

Properties

  • Durometer Range: 20 – 100 Shore A
  • Temperature Range: -20 F to +180 F
  • Max Elongation: 700%
  • Max Tensile Strength: 3,500 PSI

Advantages

  • Outstanding resilience
  • High tensile strength
  • Superior tear and abrasion resistance
  • Excellent rebound elasticity (snap)
  • Good flexibility at low temperature
  • Excellent adhesion to substrates

Limitations

  • Poor resistance to heat, ozone, and sunlight
  • Not recommended for exposure to oil, gasoline, or hydrocarbon solvents

Suitable Applications

  • Grippers
  • Bumpers
  • Vibration isolation
  • Seals
  • Shock absorption

Synthetic Natural Rubber

Polyisoprene

Synthetic Natural Rubber’s chemical composition is nearly identical to Natural Rubber. Synthetic NR offers a slight increase in resistance to weather, while slightly inferior in tensile strength, tear resistance, and compression set.

Properties

  • Durometer Range: 30 – 90 Shore A
  • Temperature Range: -50 F to +180 F
  • Max Elongation: 650%
  • Max Tensile Strength: 3,500 PSI

Advantages

  • Outstanding resilience
  • Very good tensile strength
  • Superior tear and abrasion resistance
  • Excellent rebound elasticity (snap)
  • Good flexibility at low temperature
  • Excellent adhesion to substrates
  • Lack of odor

Limitations

  • Poor resistance to heat, ozone, and sunlight
  • Not recommended for exposure to oil, gasoline, or hydrocarbon solvents

Suitable Applications

  • Grippers
  • Bumpers
  • Vibration isolation
  • Seals
  • Shock absoption

Neoprene

Chloroprene

An excellent all-purpose material, Neoprene performs well for many applications.

Properties

  • Durometer Range: 20 – 95 Shore A
  • Temperature Range: -50 F to +250 F
  • Max Elongation: 600%
  • Max Tensile Strength: 3,000 PSI

Advantages

  • Inherent flame resistance
  • Excellent adhesion to substrates
  • Very good weather, ozone, and natural aging resistance
  • Very good resistance to alkalis and acids
  • Good resistance to abrasion and flex cracking
  • Moderate resistance to oil and gasoline

Limitations

  • Poor resistance to aromatic and oxygenated solvents
  • Limited flexibility at low temperatures

Suitable Applications

  • Seals
  • Gaskets
  • Grommets
  • Bumpers
  • Vibration mounts
  • Grippers

Nitrile

Acrylonitrile Butadiene

Also referred to as Buna and NBR, Nitrile is the material of choice where resistance to oil, gasoline, and petroleum-based hydraulic fluids is needed. IMR offers several hybrid variants including PVC, Carboxylated, and Hydrogenated Nitrile materials.

Properties

  • Durometer Range: 20 – 95 Shore A
  • Temperature Range: -40 F to +250 F
  • Max Elongation: 600%
  • Max Tensile Strength: 3,000 PSI

Advantages

  • Excellent resistance to ozone and gasoline
  • Superior resistance to petroleum-based hydraulic fluids
  • Good resistance to hydrocarbon solvents
  • Very good resistance to alkalis and acids
  • Good resistance to water

Limitations

  • Poor resistance to ozone, sunlight, and natural aging
  • Poor resistance to oxygenated solvents

Suitable Applications

  • Seals
  • Gaskets
  • Grommets
  • O-rings
  • Any application which will see exposure to fuel and oil

Variants

  • Hydrogenated Nitrile (HNBR)
    • Increases Nitrile’s already robust resistance to oil, gas and steam. Improves retention of properties after exposure to heat, oil, weathering, and many industrial chemicals.
  • Carboxylated Nitrile (XNBR)
    • Modifying NBR’s polymer backbone with a Carboxylic Acid containing group improves abrasion and tear resistance.
  • Polyvinyl Chloride Nitrile (Nitrile-PVC)
    • Improves fuel, ozone, and weathering resistance of NBR.

SBR

Styrene Butadiene Rubber

SBR offers similarity in most of its properties to Natural Rubber at a lower price. SBR is tougher and slightly more resistant to flex cracking, with slightly poorer physical characteristics.

Properties

  • Durometer Range: 30 – 100 Shore A
  • Temperature Range: -50 F to +225 F
  • Max Elongation: 600%
  • Max Tensile Strength: 3,000 PSI

Advantages

  • Excellent impact strength
  • Very good resilience
  • Very good tensile strength
  • Very good abrasion resistance
  • Very good flexibility at low temperatures

Limitations

  • Poor resistance to ozone and sunlight
  • Very little resistance to oil, gasoline, and hydrocarbon solvents

Suitable Applications

  • Seals
  • Gaskets
  • Bumpers
  • Vibration absorption

Silicone

Polysiloxane

Silicone rubber is the material of choice for extreme temperature applications due to its ability to maintain its properties throughout its temperature range.

Properties

  • Durometer Range: 25 – 90 Shore A
  • Temperature Range: -150 F to +500 F
  • Max Elongation: 700%
  • Max Tensile Strength: 1,500 PSI

Advantages

  • Outstanding resistance to high heat
  • Excellent flexibility at low temperatures
  • Low compression set
  • Very good electrical insulation
  • Excellent resistance to weather, ozone, sunlight and oxidation
  • Superior color stability

Limitations

  • Poor resistance to abrasion, tear, and cut growth
  • Low tensile strength
  • Inferior resistance to oil, gasoline, and solvents
  • Poor resistance to alkalis and acids

Suitable Applications

  • Seals
  • Gaskets
  • Bumpers
  • Vibration absorption

Urethane

Polyurethane Diisocyanate

The nexus between rubber and plastic, Urethane offers both incredible tensile strength and good elasticity.

Properties

  • Durometer Range: 35 – 100 Shore A
  • Temperature Range: -30 F to +180 F
  • Max Elongation: 750%
  • Max Tensile Strength: 6,000 PSI

Advantages

  • Outstanding resistance to abrasion and tear
  • Very high tensile strength
  • Good elongation
  • Excellent resistance to weather, ozone, and sunlight
  • Good resistance to oil and gasoline
  • Excellent adhesion to substrates

Limitations

  • Poor resistance to alkalis, acids, and oxygenated solvents
  • Inferior resistance to high-heat
  • Inferior resistance to steam / hot water

Suitable Applications

  • Grippers
  • Drive wheels
  • Currency rollers
  • Track pads
  • Seals

EPDM

Ethylene Propylene Diene Monomer

The material of choice for outdoor applications, it exhibits excellent resistance to ozone, sunlight, water, and severe weather conditions.

Properties

  • Durometer Range: 30 – 90 Shore A
  • Temperature Range: -50 F to +350 F
  • Max Elongation: 600%
  • Max Tensile Strength: 2,500 PSI

Advantages

  • Excellent resistance to heat, ozone, and sunlight
  • Very good flexibility at low temperatures
  • Good resistance to alkalis, acids, and oxygenated solvents
  • Superior resistance to water and steam
  • Excellent color stability

Limitations

  • Poor resistance to oil, gasoline, and hydrocarbon solvents
  • Limited adhesion to substrates

Suitable Applications

  • Fluid transfer valves
  • Marine bumpers, seals, gaskets
  • Seals
  • Grommets

Fluorocarbon

Fluoronated Hydrocarbon

Fluorocarbon is a material that works very well in almost any condition. Its high cost dictates it is typically implemented only in the most extreme of operating conditions

Properties

  • Durometer Range: 55 – 90 Shore A
  • Temperature Range: -40 F to +450 F
  • Max Elongation: 300%
  • Max Tensile Strength: 2,000 PSI

Advantages

  • Outstanding resistance to high heat
  • Excellent resistance to oil, gasoline, hydraulic fluids, and hydrocarbon solvents
  • Good flame resistance
  • Very good impermeability to gases and vapor
  • Very good resistance to weather, oxygen, ozone, and sunlight

Limitations

  • Poor resistance to tear and cut growth
  • Very little resistance to oxygenated solvents
  • Fair adhesion to substrates

Suitable Applications

  • O-rings
  • Gaskets
  • Seals

Butyl

Isobutylene-Isoprene

Butyl is heralded for its high energy absorption (damping) and impermeability to gases and vapor.

Properties

  • Durometer Range: 40 – 90 Shore A
  • Temperature Range: -75 F to +250 F
  • Max Elongation: 850%
  • Max Tensile Strength: 300 PSI

Advantages

  • Outstanding impermeability to gases and vapor
  • Very good resistance to heat, oxygen, ozone, and sunlight.
  • High energy absorption
  • Excellent resistance to alkalis and oxygenated solvents
  • Good hot tear strength
  • Superior resistance to water and steam

Limitations

  • High compression set
  • Poor resistance to oil
  • Low rebound elasticity
  • Poor resilience

Suitable Applications

  • O-rings
  • Gaskets
  • Seals

Natural Rubber

Natural Polyisoprene

Derived from trees, Natural Rubber offers excellent physical properties, including abrasion, gouging, and cut growth resistance. Used for producing rubber bands, it also exhibits great rebound elasticity and flexibility.

Properties

  • Durometer Range: 20 – 100 Shore A
  • Temperature Range: -20 F to +180 F
  • Max Elongation: 700%
  • Max Tensile Strength: 3,500 PSI

Advantages

  • Outstanding resilience
  • High tensile strength
  • Superior tear and abrasion resistance
  • Excellent rebound elasticity (snap)
  • Good flexibility at low temperature
  • Excellent adhesion to substrates

Limitations

  • Poor resistance to heat, ozone, and sunlight
  • Not recommended for exposure to oil, gasoline, or hydrocarbon solvents

Suitable Applications

  • Grippers
  • Bumpers
  • Vibration isolation
  • Seals
  • Shock absorption

Synthetic Natural Rubber

Polyisoprene

Synthetic Natural Rubber’s chemical composition is nearly identical to Natural Rubber. Synthetic NR offers a slight increase in resistance to weather, while slightly inferior in tensile strength, tear resistance, and compression set.

Properties

  • Durometer Range: 30 – 90 Shore A
  • Temperature Range: -50 F to +180 F
  • Max Elongation: 650%
  • Max Tensile Strength: 3,500 PSI

Advantages

  • Outstanding resilience
  • Very good tensile strength
  • Superior tear and abrasion resistance
  • Excellent rebound elasticity (snap)
  • Good flexibility at low temperature
  • Excellent adhesion to substrates
  • Lack of odor

Limitations

  • Poor resistance to heat, ozone, and sunlight
  • Not recommended for exposure to oil, gasoline, or hydrocarbon solvents

Suitable Applications

  • Grippers
  • Bumpers
  • Vibration isolation
  • Seals
  • Shock absoption

Neoprene

Chloroprene

An excellent all-purpose material, Neoprene performs well for many applications.

Properties

  • Durometer Range: 20 – 95 Shore A
  • Temperature Range: -50 F to +250 F
  • Max Elongation: 600%
  • Max Tensile Strength: 3,000 PSI

Advantages

  • Inherent flame resistance
  • Excellent adhesion to substrates
  • Very good weather, ozone, and natural aging resistance
  • Very good resistance to alkalis and acids
  • Good resistance to abrasion and flex cracking
  • Moderate resistance to oil and gasoline

Limitations

  • Poor resistance to aromatic and oxygenated solvents
  • Limited flexibility at low temperatures

Suitable Applications

  • Seals
  • Gaskets
  • Grommets
  • Bumpers
  • Vibration mounts
  • Grippers

Nitrile

Acrylonitrile Butadiene

Also referred to as Buna and NBR, Nitrile is the material of choice where resistance to oil, gasoline, and petroleum-based hydraulic fluids is needed. IMR offers several hybrid variants including PVC, Carboxylated, and Hydrogenated Nitrile materials.

Properties

  • Durometer Range: 20 – 95 Shore A
  • Temperature Range: -40 F to +250 F
  • Max Elongation: 600%
  • Max Tensile Strength: 3,000 PSI

Advantages

  • Excellent resistance to ozone and gasoline
  • Superior resistance to petroleum-based hydraulic fluids
  • Good resistance to hydrocarbon solvents
  • Very good resistance to alkalis and acids
  • Good resistance to water

Limitations

  • Poor resistance to ozone, sunlight, and natural aging
  • Poor resistance to oxygenated solvents

Suitable Applications

  • Seals
  • Gaskets
  • Grommets
  • O-rings
  • Any application which will see exposure to fuel and oil

Variants

  • Hydrogenated Nitrile (HNBR)
    • Increases Nitrile’s already robust resistance to oil, gas and steam. Improves retention of properties after exposure to heat, oil, weathering, and many industrial chemicals.
  • Carboxylated Nitrile (XNBR)
    • Modifying NBR’s polymer backbone with a Carboxylic Acid containing group improves abrasion and tear resistance.
  • Polyvinyl Chloride Nitrile (Nitrile-PVC)
    • Improves fuel, ozone, and weathering resistance of NBR.

SBR

Styrene Butadiene Rubber

SBR offers similarity in most of its properties to Natural Rubber at a lower price. SBR is tougher and slightly more resistant to flex cracking, with slightly poorer physical characteristics.

Properties

  • Durometer Range: 30 – 100 Shore A
  • Temperature Range: -50 F to +225 F
  • Max Elongation: 600%
  • Max Tensile Strength: 3,000 PSI

Advantages

  • Excellent impact strength
  • Very good resilience
  • Very good tensile strength
  • Very good abrasion resistance
  • Very good flexibility at low temperatures

Limitations

  • Poor resistance to ozone and sunlight
  • Very little resistance to oil, gasoline, and hydrocarbon solvents

Suitable Applications

  • Seals
  • Gaskets
  • Bumpers
  • Vibration absorption

Silicone

Polysiloxane

Silicone rubber is the material of choice for extreme temperature applications due to its ability to maintain its properties throughout its temperature range.

Properties

  • Durometer Range: 25 – 90 Shore A
  • Temperature Range: -150 F to +500 F
  • Max Elongation: 700%
  • Max Tensile Strength: 1,500 PSI

Advantages

  • Outstanding resistance to high heat
  • Excellent flexibility at low temperatures
  • Low compression set
  • Very good electrical insulation
  • Excellent resistance to weather, ozone, sunlight and oxidation
  • Superior color stability

Limitations

  • Poor resistance to abrasion, tear, and cut growth
  • Low tensile strength
  • Inferior resistance to oil, gasoline, and solvents
  • Poor resistance to alkalis and acids

Suitable Applications

  • Seals
  • Gaskets
  • Bumpers
  • Vibration absorption

Urethane

Polyurethane Diisocyanate

The nexus between rubber and plastic, Urethane offers both incredible tensile strength and good elasticity.

Properties

  • Durometer Range: 35 – 100 Shore A
  • Temperature Range: -30 F to +180 F
  • Max Elongation: 750%
  • Max Tensile Strength: 6,000 PSI

Advantages

  • Outstanding resistance to abrasion and tear
  • Very high tensile strength
  • Good elongation
  • Excellent resistance to weather, ozone, and sunlight
  • Good resistance to oil and gasoline
  • Excellent adhesion to substrates

Limitations

  • Poor resistance to alkalis, acids, and oxygenated solvents
  • Inferior resistance to high-heat
  • Inferior resistance to steam / hot water

Suitable Applications

  • Grippers
  • Drive wheels
  • Currency rollers
  • Track pads
  • Seals

EPDM

Ethylene Propylene Diene Monomer

The material of choice for outdoor applications, it exhibits excellent resistance to ozone, sunlight, water, and severe weather conditions.

Properties

  • Durometer Range: 30 – 90 Shore A
  • Temperature Range: -50 F to +350 F
  • Max Elongation: 600%
  • Max Tensile Strength: 2,500 PSI

Advantages

  • Excellent resistance to heat, ozone, and sunlight
  • Very good flexibility at low temperatures
  • Good resistance to alkalis, acids, and oxygenated solvents
  • Superior resistance to water and steam
  • Excellent color stability

Limitations

  • Poor resistance to oil, gasoline, and hydrocarbon solvents
  • Limited adhesion to substrates

Suitable Applications

  • Fluid transfer valves
  • Marine bumpers, seals, gaskets
  • Seals
  • Grommets

Fluorocarbon

Fluoronated Hydrocarbon

Fluorocarbon is a material that works very well in almost any condition. Its high cost dictates it is typically implemented only in the most extreme of operating conditions

Properties

  • Durometer Range: 55 – 90 Shore A
  • Temperature Range: -40 F to +450 F
  • Max Elongation: 300%
  • Max Tensile Strength: 2,000 PSI

Advantages

  • Outstanding resistance to high heat
  • Excellent resistance to oil, gasoline, hydraulic fluids, and hydrocarbon solvents
  • Good flame resistance
  • Very good impermeability to gases and vapor
  • Very good resistance to weather, oxygen, ozone, and sunlight

Limitations

  • Poor resistance to tear and cut growth
  • Very little resistance to oxygenated solvents
  • Fair adhesion to substrates

Suitable Applications

  • O-rings
  • Gaskets
  • Seals

Butyl

Isobutylene-Isoprene

Butyl is heralded for its high energy absorption (damping) and impermeability to gases and vapor.

Properties

  • Durometer Range: 40 – 90 Shore A
  • Temperature Range: -75 F to +250 F
  • Max Elongation: 850%
  • Max Tensile Strength: 300 PSI

Advantages

  • Outstanding impermeability to gases and vapor
  • Very good resistance to heat, oxygen, ozone, and sunlight.
  • High energy absorption
  • Excellent resistance to alkalis and oxygenated solvents
  • Good hot tear strength
  • Superior resistance to water and steam

Limitations

  • High compression set
  • Poor resistance to oil
  • Low rebound elasticity
  • Poor resilience

Suitable Applications

  • O-rings
  • Gaskets
  • Seals

In House Rubber Material Development

At the heart of our expertise is a robust polymer engineering capability, enabling us to tailor our base of available rubber materials to fit your unique application. We take the time at project conception to learn about the application of your rubber component to ensure proper material selection. Not every project requires an intensive stage of rubber material development, but if the need arises, rest assured that we have a proven track record of custom rubber mixing.

In House Rubber Material Development

At the heart of our expertise is a robust polymer engineering capability, enabling us to tailor our base of available rubber materials to fit your unique application. We take the time at project conception to learn about the application of your rubber component to ensure proper material selection. Not every project requires an intensive stage of rubber material development, but if the need arises, rest assured that we have a proven track record of custom rubber mixing.

In House Rubber Material Development

At the heart of our expertise is a robust polymer engineering capability, enabling us to tailor our base of available rubber materials to fit your unique application. We take the time at project conception to learn about the application of your rubber component to ensure proper material selection. Not every project requires an intensive stage of rubber material development, but if the need arises, rest assured that we have a proven track record of custom rubber mixing.

Colored Rubber Available

We offer colored rubber materials for our customers that need to keep components on-brand or to differentiate between identical parts with different durometers.

Colored Rubber Available

We offer colored rubber materials for our customers that need to keep components on-brand or to differentiate between identical parts with different durometers.

Technical Information

RUBBER SELECTION GUIDE

For a more in-depth understanding of materials available. Some properties vary by durometer.
LEARN MORE

FDA COMPLIANT MATERIALS

IMR offers rubber materials intended for repeated food contact in accordance with FDA CFR 21 177.2600
LEARN MORE

NSF / ANSI STD 61 MATERIALS

IMR can offer rubber materials compliant with drinking water system compliance regulations
LEARN MORE

RUBBER SELECTION GUIDE

For a more in-depth understanding of materials available. Some properties vary by durometer.
LEARN MORE

FDA COMPLIANT MATERIALS

IMR offers rubber materials intended for repeated food contact in accordance with FDA CFR 21 177.2600
LEARN MORE

NSF / ANSI STD 61 MATERIALS

IMR can offer rubber materials compliant with drinking water system compliance regulations
LEARN MORE

RoHS, REACH, and Conflict Minerals Policy

IMR makes every effort possible to source materials in compliance with each of these standards.
Communication between customer and IMR from project onset is critical to ensuring that materials
utilized conform to each customer’s unique policies and requirements.

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