Chemical compatibility guide
This chart is intended as a general guide and details the suitability of elastomers in various chemicals and fluids. As an indication we have detailed the type of polymer we feel is suitable.
We cannot guarantee the accuracy of the information as many other factors must be considered, for example:
• Service temperature – High temperatures increase the effects of chemicals.
• Service conditions – A compound which swells in a dynamic application may be suitable as a static seal.
• Grade of polymer – Many polymers are available in different grades, each having different chemical resistances. For example, in addition to standard NBR there are special grades for low temperatures and increased chemical resistance.
• Compound – A compound developed for outstanding properties may not have the chemical resistance offered by another compound.
Material types shown in the chart are:
| NBR – Nitrile | CR – Neoprene |
| HNBR – Hydrogenated Nitrile | SBR – Styrene Butadiene |
| EP / EPDM – Ethylene Propylene | ACM – Polyacrylic |
| FKM – Fluorocarbon/Viton® | AU / EU – Polyurethane |
| FKM ETP – Fluorocarbon/Viton® Extreme | FVMQ – Fluorosilicone |
| FFKM – Perfluoroelastomer | VMQ – Silicone |
| FEPM / TFE/P (AFLAS) – Tetrafluoroethylene /Propylene | PTFE – Polytetrafluoroethylene |
Compound Compatibility Rating:
1 – Satisfactory (little or no effect)
2 – Fair (possible loss of physical properties)
3 – Doubtful (noticeable change – significant swelling)
4 – Unsuitable
X – Insufficient Data
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