Materials

It shouldn't be difficult to choose the right material.

We have therefore chosen to give you a brief introduction of the most frequently occurring elastomers.

Rating scale for table below
5 - Excellent
4 - Very good
3 - Good
2 - Less good
1 - Bad

You are more than welcome to contact our material technicians if you would like to know more about a specific elastomer.
NR / IR

Natural rubber / Isoprene rubber

Natural and isoprene rubber have high elasticity and breaking strength as well as good abrasion and fatigue properties.

Ozone resistance is low but can be improved by adding, for example, antiozonants and protective waxes.
Characteristics
  • Max. temperature: 80°C
  • Min. temperature: -50°C
  • Tear strength: 4
  • Compression set at -30 to +70°C: 4
  • Compression set at +70 to +150°C: 1
  • Wear resistance: 4-5
  • Oil and gasoline resistance: 1
  • Weather and ozone resistance: 1-2
  • Heat aging: 1-2
  • Adhesion to metal: 4-5
  • Adhesion to textile: 4-5
SBR

Styrene rubber

Styrene rubber is most often used when a durable material is needed.

Compared to natural rubber, elasticity and low temperature properties are worse, while heat resistance is better. Also SBR has low ozone resistance, but it can be improved by adding antiozonants and protective waxes.
Characteristics
  • Maximum temperature: 90°C
  • Minimum temperature: -40°C
  • Tear strength: 3
  • Compression set at -30 to +70°C: 4
  • Compression set at +70 to +150°C: 1
  • Wear resistance: 4-5
  • Oil and gasoline resistance: 1
  • Weather and ozone resistance: 1-2
  • Heat aging: 1-2
  • Adhesion to metal: 4-5
  • Adhesion to textile: 4-5
BR

Butadiene rubber

Butadiene rubber has slightly better wear resistance than natural rubber and a high rating when it comes to wear resistance.
Characteristics
  • Maximum temperature: 90°C
  • Minimum temperature: -75°C
  • Tear strength: 3
  • Compression set at -30 to +70°C: 4
  • Compression set at +70 to +150°C: 1
  • Wear resistance: 5
  • Oil and gasoline resistance: 1
  • Weather and ozone resistance: 1-2
  • Heat aging: 1-2
  • Adhesion to metal: 4-5
  • Adhesion to textile: 4-5
EPM / EPDM

Ethylene propylene rubber

Ethylene propylene rubber is often the material chosen to replace NR or SBR with when there are higher demands for weather and ozone resistance as well as better thermal aging properties.
Characteristics
  • Maximum temperature: 120°C
  • Minimum temperature: -35°C
  • Tear strength: 3
  • Compression set at -30 to +70°C: 3
  • Compression set at +70 to +150°C: 2-3
  • Wear resistance: 3
  • Oil and gasoline resistance: 1
  • Weather and ozone resistance: 5
  • Heat ageing: 3-4
  • Adhesion to metal: 3
  • Adhesion to textile: 3
IIR

Butyl rubber

Butyl rubber has low elasticity and good damping ability at room temperature as well as a high diffusion resistance for gases.

It also has good chemical resistance to, for example, ozone, which is why it is often used in outdoor applications.
Characteristics
  • Maximum temperature: 90°C
  • Minimum temperature: -45°C
  • Tear strength: 3
  • Compression set at -30 to +70°C: 2
  • Compression set at +70 to +150°C: 2
  • Wear resistance: 3
  • Oil and gasoline resistance: 1
  • Weather and ozone resistance: 4
  • Heat ageing: 3-4
  • Adhesion to metal: 2
  • Adhesion to textile: 2
NR

Nitrile rubber

Nitrile rubber is mainly used when oil and fuel resistance is needed.

If even better properties are required in this area, one often turns their gaze to the sibling HNBR - hydrogenated nitrile rubber.
Characteristics
  • Maximum temperature: 90°C
  • Minimum temperature: -30°C
  • Tear strength: 3
  • Compression set at -30 to +70°C: 3
  • Compression set at +70 to +150°C: 3
  • Wear resistance: 3
  • Oil and gasoline resistance: 3-4
  • Weather and ozone resistance: 1-2
  • Heat ageing: 3
  • Adhesion to metal: 4
  • Adhesion to textile: 3-4
HNBR

Hydrogenated nitrile rubber

Hydrogenated nitrile is in most aspects a better version of NBR. Mainly with improved properties when it comes to heat and ozone resistance.
Characteristics
  • Maximum temperature: 125°C
  • Minimum temperature: -25°C
  • Tear strength: 3
  • Compression set at -30 to +70°C: 2-3
  • Compression set at +70 to +150°C: 4
  • Wear resistance: 3
  • Oil and gasoline resistance: 3-4
  • Weather and ozone resistance: 5
  • Heat ageing: 4
  • Adhesion to metal: 3
  • Adhesion to textile: 3
CR

Chloroprene rubber

The choice often falls on chloroprene rubber when you need an "all-round" material that does not stand out in any direction but has in general good properties in all areas.
Characteristics
  • Maximum temperature: 85°C
  • Minimum temperature: -35°C
  • Tear strength: 3
  • Compression set at -30 to +70°C: 3
  • Compression set at +70 to +150°C: 2-3
  • Wear resistance: 3-4
  • Oil and gasoline resistance: 2-3
  • Weather and ozone resistance: 3
  • Heat ageing: 3
  • Adhesion to metal: 4
  • Adhesion to textile: 4-5

Do you want to know more about materials?