Group R Compounds
CIIR: chlorobutyl
Commercial name: Esso Butyl (Esso).
Chlorobutyl rubber is obtained by the addition of chlorine to the compound for butyl rubber (IIR). The result obtained is a rubber that presents the characteristics of butyl rubbers, but with a better elastic behaviour: there is an increase in the Compression Set value especially at low temperatures.
Temperature table
Fluid compatibility table
The Elastotech code for this compound is: ME15XX/YY.
Chlorobutyl rubber is obtained by the addition of chlorine to the compound for butyl rubber (IIR). The result obtained is a rubber that presents the characteristics of butyl rubbers, but with a better elastic behaviour: there is an increase in the Compression Set value especially at low temperatures.
Temperature table
| Maximum temperature | Minimum temperature |
| 130°C | -40°C |
| Compatible | No compatible |
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