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James Walker® Gaskets & Jointings > Commercial grade elastomers



  Commercial grade elastomers
Chemical suitability guide
 
Notation:
A = Suitable product
B = Fair: some volume swell/chemical attack
C = Static use only
D = Unsuitable: do NOT use
* Suitability can depend on the grade selected
Note on temperature: All media considered to be at 20°C unless otherwise stated.
Where chemical compatibility is not indicated, or a chemical is not listed, please consult our technical services team for a recommendation to be made.
 
GENERAL ELASTOMER NATURAL RUBBER (NR) NEOPRENE RUBBER (CR) NITRILE RUBBER (NBR) ETHYLENE-PROPYLENE RUBBER (EPM, EPDM) SILICONE RUBBER (VMQ) FLUOROCARBON RUBBER (FKM) BUTYL (IIR) KALREZ® (FFKM)
STEAM (<120°C) D D D A D D C A
WATER A B A A A A A A
WATER (POTABLE) * * * * * * * *
AIR A A A A A A A A
ACETIC ACID (10%) D C D A A D A A
ACETONE B C D A D D A A
ACETYLENE D C A D C A D A
ADIPIC ACID A A A A A A
ALUMINIUM CHLORIDE A A A A C A A A
AMMONIA (ANHYDROUS, DRY) D A C A C D A A
AMMONIUM CHLORIDE A A A A C A A A
AMMONIUM HYDROXIDE (10%) B B B A B B A A
ANILINE D D D B D C B A
BENZENE D D D D D C D A
BLEACH SOLUTIONS D D D A C A A A
BRINE D D D D D A D A
BROMINE (ANHYDROUS) D D D D A D A
BUNKER FUEL D D A D C A D A
BUTANE D B A D D A D A
BUTYL ALCOHOL (50°C) A A A C C A C A
CALCIUM CHLORIDE A A A A A A A A
CALCIUM HYDROXIDE B A B A B A A A
CALCIUM HYPOCHLORITE (15%) C D D A C A A A
CARBON DIOXIDE B C A C C C C A
CARBON DISULPHIDE D D D D D A D A
CARBON TETRACHLORIDE D D D D D A D A
CHLORINE (DRY) D D D D D B D A
CHLORINE (WET) D D D D D B D B
CHROMIC ACID (40%) D D D C D A D A
CREOSOTE D D B D D A D A
DIESEL OIL D C A D D A D A
DIETHYL ETHER D D D D D D D A
ETHANE D C A D D A D A
ETHANOLAMINES (less than 5%) B D D B B D B *
ETHER D D D D D D D A
ETHYL ALCOHOL (Ethanol) B A A A A A A A
ETHYLENE A B D A
ETHYLENE GLYCOL B A A A A A A A
ETHYLENE OXIDE D D D D D D D A
FERRIC CHLORIDE (WET) A C A A C A A A
FOODSTUFFS * * * * * * * *
FORMALDEHYDE (40%) B D D A C D B A
FORMIC ACID C B D A C D D A
GLYCERINE A A A A A A A A
GREEN LIQUOR (SULPHATE) B C C A A A A A
HEAVY OILS A A
HYDROBROMIC ACID (37%) A D D A D A A A
HYDROCHLORIC ACID (37%) D D C C D A C A
HYDROFLUORIC ACID (48%) C A D B D A B A
HYDROGEN PEROXIDE (<30%) D B B A A A D A
HYDROGEN SULPHIDE (DRY, 5%) A A A A D D A A
ISOBUTYL ALCOHOL B A C C A A A A
ISOPROPYL ALCOHOL B A C A A A A A
KEROSENE (70°C) D D A D D A D A
LIQUID PETROLEUM GAS D C A D D A D A
LYE B C C A C C A A
MAGNESIUM CHLORIDE A A A A A A A A
METHANE D C A D D C D A
METHYL ALCOHOL (Methanol) A A A A A D A A
METHYL CHLORIDE D D D D D C D A
METHYL ETHYL KETONE D D D A D D A A
METHYLENE CHLORIDE D D D D D C D A
MINERAL OILS D D A D B A D A
NAPHTHA D D B D D A D A
NATURAL GAS D B A D B A D A
NITRIC ACID (10%) B B D A B A A A
NITROGEN A A A A A A A A
OCTANE D D B D D A D A
OLEUM D D D D D C D A
OXALIC ACID (25%, 70°C) B C C B C A A A
OXYGEN (DEGREASED SEALS) B A C A A A A A
PERCHLOROETHYLENE D D D D D A D A
PHENOLS A C D B A A A A
PHOSPHORIC ACID (50%) C C D A C A A A
POTASSIUM DICHROMATE (10%) B A A A A A A A
POTASSIUM HYDROXIDE (50%) B C B A C D A A
POTASSIUM NITRATE A A A A A A A A
PROPANE D C A C D A D A
PYRIDINE D D D D D D C A
REFRIGERANTS (UNCONTAMINATED)
R12 (eg Freon® 12) D A A C D C C B
R13 (eg Freon® 13) A A A A D C A B
R22 (eg Freon® 22) B A D A D D A A
R134a (eg KLEA® 134a) A A A A B D A C
SEA WATER A B A A A A A A
SOAP SOLUTION B B A A A A A A
SODA ASH A A A A A A A A
SODIUM CARBONATE A A A A A A A A
SODIUM DICHROMATE (10%) A A
SODIUM HYDROXIDE (50%) C B C B B D B A
SODIUM HYPOCHLORITE (20%) C D C B C C C A
STYRENE D D D D D D D A
SULPHUR DIOXIDE (DRY) B D D A C A B A
SULPHUR DIOXIDE (WET) D A C A A A
SULPHUR TRIOXIDE B D D C C A C A
SULPHURIC ACID (10%) B B C A D B A A
TANNIC ACID A C A A C A A A
TITANIUM TETRACHLORIDE D D B D D C D B
TOLUENE (TOLUOL) D D D D D A D A
TRANSFORMER OIL D C A D B A D A
TRICHLOROETHANE D D D D D B D A
TRICHLOROETHYLENE D D D D D A D A
TURPENTINE D D A D D A D A
UREA SOLUTION (30%) A A A A A A
VINYL CHLORIDE D D D C A D A
WHITE SPIRIT D D B D D A D A
XYLENE D D D D D A D A
 
Due to the complexity of making a recommendation for any given duty, this section on chemical suitability is intended only as a guide. The possible effect of elevated temperatures should be considered when determining the compatibility of these products with a chemical. If necessary, please contact our technical services team for assistance.
Freon® is a registered trademark of EI DuPont de Nemours & Company. KLEA® is a registered trademark of ICI C&P Ltd. Kalrez® is a registered trademark of DuPont Performance Elastomers.