| N R: |
Temp Range:-55°C … +55°C, Shore Hardness: 30 Duro…90Duro |
| Strengths: |
High resilience,High tensile strength with good resistance to abrasion, tear & fatigue. |
| Weaknesses: |
Susceptible to attack by ozone, poor resistance to mineral &~ petroleum based oils. |
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| SBR: |
Temp Range: -55°C … +70°C, Shore Hardness: 40 Duro…80Duro |
| Strengths: |
Similar to NR, greater abrasion resistance,resilience, better wear resistance, low temperature flexibility and better water resistance, heat aging |
| Weaknesses: |
Poor tear resistance after heating, susceptible to attack by ozone |
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| NITRILE: |
Temp Range: -40°C … +120°C, Shore Hardness: 40 Duro…90Duro |
| Strengths: |
Excellent fuel and oil resistnce, Resistance to hydrocarbons, acids and bases is good. Excellent resistance to permanent compression. Also available in an FDA compound. |
| Weaknesses: |
Poor ozone and low temp performance, but these can be amended by the addition of plasticizer |
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| NEOPRENE: |
Temp Range: -40°C … +135°C, Shore Hardness: 40 Duro…90Duro |
| Strengths: |
Good ageing, abrasion & weather resistance with some resistance to petroleum-based oils lend themselves to low flammability applications. Also available in an FDA compound. |
| Weaknesses: |
Poor electrical properties, not resistant to ester lubricants & poor resistance to chemicals. |
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| SILICONE: |
Temp Range: -30°C … +220°C, Shore Hardness: 30 Duro…90Duro |
| Strengths: |
Outstanding ozone & weather resistance, good electrical properties, good temperature-range. Also available in an FDA compound. |
| Weaknesses: |
Poor resistance to petroleum based fluids, has a tendency to creep. |
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| EPDM: |
Temp Range: -55°C … +150°C, Shore Hardness: 25 Duro…80Duro |
| Strengths: |
Outstanding resistance to ozone, oxygen, Light ageing, oxidative & heat ageing & many inorganic and organic chemicals, good low temperature behaviour. |
| Weaknesses: |
Poor resistance to petroleum-based fluids. |
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| VITON: |
Temp Range: -25°C … +205°C, Shore Hardness: 50 Duro…90Duro |
| Strengths: |
Excellent resistance to high temperatures, heat, oil , ozone, weather and chemical attack. Also available in an FDA compound. |
| Weaknesses: |
Only fair low temp performance. |
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