Material Selection

Properties Perfluoroelastomer FFKM Natural FR EPDM
Hardness Range (SHORE A) 50-90 30-95 30-85
Colours Limited Range Full Range Limited Range
Heat Resistance      
-Max. Continuous 220°C 75°C 130°C
-Max. Intermittent 270°C 105°C 150°C
-Low Temp. Resistance -2 (Trio)°C -60°C -50°C
General Resistance      
-Oxidation Outstanding Fair Excellent
-Ozone & Weathering Outstanding Poor Outstanding
Oil Resistance      
-Low Temperature Poor Poor Fair
-High Temperature Excellent Unsatisfactory Unsatisfactory
-Fuel Resistance Excellent Unsatisfactory Unsatisfactory
Solvent Resistance      
-Alcohol Excellent Good Good
-Acetone Excellent Fair Good
-Benzene Excellent Unsatisfactory Unsatisfactory
Chemical Resistance      
-Acids Excellent Fair Good
-Bases Excellent Good Good
Physical Strength Good Excellent Good
Compression Set To HRN 200 Good Good Good
Tear & Abrasion Resistance Good Excellent Good
Resilience Fair Excellent Good
Permeability to Gases Very Low Poor Fairly Low
Electrical Strength Good Excellent Excellent
Flame Resistance Self-Extinguishing Poor Poor
Water Resistance Excellent Very Good Excellent
       
Properties Neoprene CR Nitrile NBR Silicone MQ VMQ
Hardness Range (SHORE A) 30-90 40-85 40-85
Colours Full Range Limited Range Limited Range
Heat Resistance      
-Max. Continuous 95°C 130°C 205°C
-Max. Intermittent 125°C 160°C 300°C
-Low Temp. Resistance -35°C -25°C -60 / -80°C
General Resistance      
-Oxidation Very Good Good Excellent
-Ozone & Weathering Very Good Fair Outstanding
Oil Resistance      
-Low Temperature Good Excellent Good
-High Temperature Good Good Good
-Fuel Resistance Poor Fair Unsuitable
Solvent Resistance      
-Alcohol Good Good Good
-Acetone Fair Unsatisfactory Fair
-Benzene Unsatisfactory Unsatisfactory Unsatisfactory
Chemical Resistance      
-Acids Good Good Fair
-Bases Fair Fair Fair
Physical Strength Good Good Poor
Compression Set Good Good Good
Tear & Abrasion Resistance Good Good Poor
Resilience Very Good Good Good
Permeability to Gases Low Low Fairly Low
Electrical Strength Good Poor Excellent
Flame Resistance Self-Extinguishing Poor Good
Water Resistance Good Good Good
       
Properties Viton FKM Hypalon CSM SBR
Hardness Range (SHORE A) 40-80 40-85 40-95
Colours Limited Range Limited Range Full Range
Heat Resistance      
-Max. Continuous 205°C 130°C 85°C
-Max. Intermittent 300°C 160°C 115°C
-Low Temp. Resistance -20°C -25°C -55°C
General Resistance      
-Oxidation Outstanding Excellent Fair
-Ozone & Weathering Outstanding Outstanding Poor
Oil Resistance      
-Low Temperature Excellent Excellent Unsatisfactory
-High Temperature Excellent 150 Good Unsatisfactory
-Fuel Resistance Excellent Poor Unsatisfactory
Solvent Resistance      
-Alcohol Good Good Good
-Acetone Unsuitable Fair Fair
-Benzene Good Unsatisfactory Unsatisfactory
Chemical Resistance      
-Acids Excellent Very Good Good
-Bases Good Good Fair
Physical Strength Good Fair Good
Compression Set Good Good Good
Tear & Abrasion Resistance Good Good Good
Resilience Fair Fair Good
Permeability to Gases Very Low Low Fairly Low
Electrical Strength Good Good Excellent
Flame Resistance Self-Extinguishing Good Poor
Water Resistance Good Very Good Good
       
Additional Info:
       
Rubber Type

Abbreviation

   
Natural NR    
Nitrile NBR    
Hydrogenated Nitrile HNBR    
Ethylene Propylene EPM, EPDM    
Neoprene (Polychloroprene) CR    
Fluorocarbon (Viton) FKM, FPM    
Perfluoroelastomer (Kalrez equivalent) FFKM, FFPM    
Polyurethane (millable) PUR    
Styrene Butadiene SBR    
Silicone (silicon based) MQ, MVQ    
Fluorosilicone FMQ