What is IIR?
“IIR” stands for Isobutylene Isoprene Rubber, which is a synthetic rubber compound commonly known by its trade name “Butyl rubber.” It is a copolymer of isobutylene and isoprene, and it possesses unique properties that make it suitable for a range of applications. Butyl rubber is known for its excellent air and gas impermeability, good weather resistance, and low gas and moisture permeability.
IIR is known for its air tightness and is often used in air sealing. It can have good heat resistance, oxygen resistance, ozone resistance, and sunlight resistance. In addition, it offers excellent resistance to bases, acids, and oxygenated solvents. It has a high energy absorption capacity and can be a good electrical insulator.
|Hardness (Shore A)||30- 90|
|Tensile Strength (MPa)||Good|
|Elongation at Break (%)||Excellent|
|Tear Strength (N/mm)||Good|
|Temperature Range (°C)||-40 to 120|
|Adhesion to Metals||Good|
|UV and Weather Resistance||Good|
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