CHEMICALS

Characteristics and resistance information for rubber compounds

ASTM REF.COMMON NAMECOMPOSITIONCOMPOSITION
NBRNitrile (Buna-N)Nitrile butadiene• Excellent oil resistance
• Moderate resistance to aromatic hydrocarbons 
• Good physical properties
EPDMEPDMEthylene propylene diene terpolymer• Excellent ozone and weather resistance
• Good chemical resistance
• Good heat and steam resistance
• Poor resistance to petroleum-based fluids
EPMEPREthylene propylene copolymer• Excellent chemical resistance
• Good ozone and weather resistance
• Excellent heat and steam resistance
• Poor resistance to petroleum-based fluids
SBRSBRStyrene butadiene• Good physical properties
• Good abrasion resistance
• Poor resistance to petroleum-based fluids
CSMHypalon®Chloro-sulfonated polyethylene• Excellent ozone and weather resistance
• Good heat and abrasion resistance
• Poor resistance to petroleum-based fluids
NRNatural rubberPolyisoprene • Excellent abrasion and acid resistance
• Good physical properties
• Poor resistance to petroleum-based fluids
CRNeoprene®Chloroprene• Good weather and flame resistance
• Good abrasion resistance
• Good resistance to petroleum-based fluids
FPM-FKMVitonFluoropolymer • Excellent high temperature resistance
• Excellent chemical resistance except for esters and ketones
• Good resistance to petroleum-based fluids
IRRButylIsobutylene Isoprene• Excellent oil resistance
• Good heat resistance<
• Low permeability
• Poor oil resistance
UHMW-PEUltra-High molecular weight polyethylenePolyethylene• Excellent chemical resistance
• Excellent abrasion resistance
• Moderate heat resistance
• FDA accepted material

Flexati Engineered Products Chemical Resistance Charts

Ratings and Definitions

This chart is to be used as general guideline only. Unless otherwise specified, ratings applied to the rubber compounds are based on fully concentrated or saturated solutions at ambient temperature of 21°C (70°F) under normal service conditions. The degree of resistance of a rubber compound to a specific chemical depends on many variables such as working temperature, concentration and stability of the chemical, length of exposure, etc. Combination of above-mentioned factors may affect product performance and cause degradation of the product. Also note for a specific compound many grades of polymers are available which can change the compound’s chemical resistance. If and when in doubt before using a specific product please contact your FLEXATI Sales representative for additional information.

CHEMICAL RESISTANCE RATING
EExcellentCAcceptable
GGoodXUnsatisfactory
FFairNNo Data

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