This material has a good resistance to alkali and acids, but its main feature is its outstanding impermeability to gases and vapors.
The 3R852 is designated for outdoor use when a product resistant to sunlight, oxidation, ozone and different atmospheric conditions is sought.
|Polymer Type||Butyl (IIR)|
|Hardness (Shore A) ± 5||60|
|Temperature||-30°C to 100°C (-20°F to 210°F)|
|Tensile Strength, lbs/in²||1000|
|Elongation minimum (%)||300|
|Impermeability to Gases||Outstanding|
|Resistance to dilute acid||Excellent|
|Resistance to aromatic hydro-carbons||Poor|
|Heat Aging||Very Good|