Cyber Essentials
Cyber Essentials
Quick Browse
Request a Quote  
877-796-0123
Products » Materials » Rubber » Highly Saturated Nitrile
 

HIGHLY SATURATED NITRILE

DESCRIPTION
Hydrogenation of nitrile rubber removes most of the residual unsaturation in the polymer, which makes highly saturated nitrile far less vulnerable to attack by heat, oxygen and ozone. In fact, because of superior oil and temperature resistance, highly saturated nitrile can occasionally be substituted for more costly fluorocarbon rubber. It is often used in automotive air conditioning systems that employ R-134a refrigerants. HNBR can be can be either sulfur or peroxide cured, depending on the degree of unsaturation achieved in the hydrogenation process, however, peroxide is predominately used due to the good heat stabiIity properties of the peroxide crosslinks. It can be compounded for both high and low temperature use.
COMPOSITION
Formed by hydrogenating the nitrile copolymer of butadiene and acrylonitrile. Medium density.

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
Automatic transmission fluid      
Automotive refrigerants      
Oxygenated fuels      
Ozone    
Petroleum oils      
Sour crude oil      
Weather    

OPERATING TEMPERATURE
-25 to 300 °F

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