Chlorobutyl (CIIR) and Isobutylene Isoprene (IIR) compounds provide superior gas permeation and excellent weather resistance. They are also useful for their energy absorption properties. Food grades are available.

 

Butyl rubbers do not provide good petroleum oil or fuel resistance and are not especially good at compression set resistance.

 

PAI offers Butyl compounds in a hardness range of 30 to 70 durometer. Black is the standard color, but some white compounds are available.

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Item #

Nominal Durometer

ASTM Code

Color

Compound Features

RoHS Compliant

REACH Compliant

13301 N/A 30 N/A CIIR N/A Black N/A N/A Yes N/A Yes
13401 N/A 40 N/A CIIR N/A Black N/A General Purpose, AMS 3237 N/A Yes N/A Yes
13501 N/A 50 N/A CIIR N/A Black N/A General Purpose, MIL-PRF-1149 Type I Class 3 N/A Yes N/A Yes
13525 N/A 50 N/A CIIR N/A White N/A N/A Yes N/A Yes
13644 N/A 60 N/A IIR N/A Black N/A FDA N/A Yes N/A Yes
13666 N/A 60 N/A IIR N/A Black N/A General Purpose, MIL-PRF-1149 Type II Class 3 N/A No N/A Yes
13668 N/A 65 N/A CIIR N/A Black N/A Conductive N/A Yes N/A Yes
13720 N/A 70 N/A CIIR N/A Black N/A Resistant to Compression Set and High Temperatures N/A No N/A Yes
13744 N/A 70 N/A IIR N/A Black N/A FDA N/A Yes N/A Yes
13766 N/A 70 N/A IIR N/A Black N/A General Purpose N/A Yes N/A Yes
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