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The first European to return to Portugal from Brazil with samples of such water-repellent rubberised cloth so shocked people that he was brought to court on the charge of witchcraft!
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Polyacrylate Acrylic Rubber (ACM)
ACM has outstanding resistance to petroleum fuel and oil.
In addition, it possesses complete resistance to oxidation, ozone and sunlight, combined with an ability to resist flex cracking. Resistance to hot air is slightly superior to nitrile polymers, but strength, compression set and water resistance are inferior to many of the other polymers. Greatest usage of polyacrylate is by the automotive industry in seals, o-rings, hose, tubing and cable covering.
Advantages: Good resistance to high temperatures in both air and oil environments; ozone and oxygen resistant.
Cheaper alternative to silicones and fluorinated elastomers.
Limitations: Poor chemical resistance, physical properties generally low.
Download Polyacrylate Acrylic Rubber (ACM) Data Sheet