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Chemical characteristics of commonly used engineering plastics for bearings

Chemical characteristics of commonly used engineering plastics for bearings
  PI PEEK PTFE PVDF PA66 PBT POM PP HDPE ABS
Acetone + + + (+) (+) + + + (+) +
Formic acid, water content 10% + + + + - + - + + +
Ammonia, 10% water - + + + + + (+) + + +
Ether +   + + + + + + +  
Gasoline + + + + + + + (+) (+) (+)
Boric acid, 10% water   + + + +   + + + +
Ammonia + + + (+) - - - (+) - -
Acetic acid, concentrated (+) - +   - - - + + -
Acetic acid, water content 10% + + +   - (+) (+) + + +
Hydrofluoric acid     +   - - - + + (+)
Formaldehyde, 30% water   + +   +   - + + +
Glycerin +   + + + + + + + +
Iodine, alcohol +   +   -   (+) + + (+)
Heavy butyrate, 10% water (+)   + (+) + - - + + +
Potassium permanganate, 1% water + + + + - + (+) + + (+)
Lactic acid, 90% water +   + + -   - + + -
Lactic acid, water content 10% + + + + +   (+) + + +
Sodium chloride, 10% water + + + + + + + + + +
Sodium nitrate, water content 10% +   + + + + + + + +
Sodium hydroxide, 50% water - + + + + - - + + +
Sodium hydroxide, 5% water (+)   + + +   - + +  
Oxalic acid, 10% water + + + + (+)   (+) + + +
Perchloroethylene +   + + (+) (+) + - - (+)
Phosphoric acid, concentratedH3PO3 10% (+) + + + - +   + + +
Phosphoric acid, 10% water (+) + +   -   -     +
Nitric acid, 2% water + + + + - + - + + +
Hydrochloric acid, 2% water + + + + - + - + + +
Sulfuric acid, 98% concentrated - - + (+) - - - + (+) +
Soap solution (+)   +   + + + + +  
Alkaline solution, 10% water (+)   + + + + + + + +
Toluene + + + + + (+) + + (+) -
Water, cold water + + + + + + + + + +
Water, hot water - + + + (+) + - + + +
Hydrogen peroxide, 30% water - (+) + + - + - + + +
Hydrogen peroxide, 0.5% water +   + + - + (+) + + +

Remarks: "+" means tolerable and resistant; "(+)" means conditionally tolerable and resistant; "-" means intolerable or not resistant.

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