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POLYACRYLATE RUBBER

DESCRIPTION
Polyacrylate rubber, or ACM, is a specialty rubber whose primary strength is its ability to withstand high heat while retaining oil resistance. It is often the material of choice for applications that involve sulfur bearing lubricants, which are finding increased usage in automotive applications, especially transmission seals. From a performance standpoint, ACM occupies an intermediate position between nitrile and fluorocarbon. In addition, polyacrylates exhibit good damping characteristics, are not highly corrosive to steel, and can be compounded to provide excellent flex life and some degree of flame resistance. However, this acrylic based elastomer does have some limitations. Poor low temperature flexibility limits its usefulness and compression set is not as good as most other compounds. It is also inferior to many other elastomers in strength and water resistance.
COMPOSITION
Medium density acrylic ester copolymer

PHYSICAL PROPERTIES* Excellent Good Fair Poor
Abrasion resistance      
Compression Set      
Elongation      
Flame resistance      
Gas permeability      
Low temperature flexibility      
Tear resistance      
Tensile strength      

CHEMICAL RESISTANCE* Excellent Good Fair Poor
Alipathic solvents                    
Dilute acids      
Dilute alkalis      
Ozone      
Steam      
Sulfer containing oils      
Water      
Weather      

OPERATING TEMPERATURE
0 to 350 °F

*Excellent, good, fair and poor are intended to serve as general guidelines only. Actual testing in the application environment is always recommended.