Natural Rubber, Isoprene, (NR, IR)

Styrene-
Butadiene (SBR, BR)

Butyl (IIR)

EPDM, EPM

Nitrile (NBR)

Neoprene (CR)

 Hypalon® (CSM)

Silicone (SI, (VMQ)

Viton® Fluoro-
elastomer (FKM)

Viton® B Fluoro-
elastomer (FKM)

Acetaldehyde

B

C

A

A

D

C

C

B

D

C

Acetamide

D

D

A

A

A

B

B

B

B

A

Acetic Acid, Glacial

B

B

B

A

C

D

C

B

C

C

Acetic Acid, 30%

B

B

B

A

B

A

B

A

B

A

Acetic Anhydride

B

B

B

B

C

B

A

C

D

D

Acetone

C

C

A

A

D

C

B

C

D

D

Acetophenone

D

D

A

A

D

D

D

D

D

D

Acetyl Chloride

D

D

D

D

D

D

D

C

A

A

Acetylene

B

B

A

A

A

B

B

B

A

A

Acrylonitrile

D

D

D

D

D

D

C

D

C

D

Adipic Acid

A

A

A

A

A

A

*

A

A

Alkazene (Dibromoethylbenzene)

D

D

D

D

D

D

D

D

B

B

Alum-NH3-Cr-K (Aqueous)

A

A

A

A

A

A

A

A

D

*

Aluminum Acetate (Aqueous)

A

B

A

A

B

B

A

D

D

D

Aluminum Chloride (Aqueous)

A

A

A

A

A

A

A

B

A

A

Aluminum Fluoride (Aqueous)

B

A

A

A

A

A

A

B

A

A

Aluminum Nitrate (Aqueous)

A

A

A

A

A

A

A

B

A

A

Aluminum Phosphate (Aqueous)

A

A

A

A

A

A

A

A

A

A

Aluminum Sulfate (Aqueous)

A

A

A

A

A

A

A

A

A

A

Ammonia Anhydrous

D

D

A

A

B

A

B

C

D

D

Ammonia Gas (cold)

A

A

A

A

A

A

A

A

D

D

Ammonia Gas (hot)

D

D

B

B

D

B

B

A

D

D

Ammonium Carbonate (Aqueous)

A

A

A

*

D

A

*

*

A

A

Ammonium Chloride (Aqueous)

A

A

A

A

A

A

A

A

A

Ammonium Hydroxide (conc.)

D

D

A

A

D

A

A

A

B

A

Ammonium Nitrate (Aqueous)

C

B

A

A

A

A

A

*

A

A

Ammonium Nitrite (Aqueous)

A

A

A

A

A

A

A

B

A

A

Ammonium Persulfate (Aqueous)

A

D

A

A

D

A

A

*

A

A

Ammonium Phosphate (Aqueous)

A

A

A

A

A

A

A

A

A

A

Ammonium Sulfate (Aqueous)

A

A

A

A

A

A

A

*

B

A

Amyl Acetate (Banana Oil)

D

D

C

C

D

D

D

D

D

D

Amyl Alcohol

B

B

A

A

B

B

A

D

B

A

Amyl Borate

D

D

D

D

A

A

A

*

A

A

Amyl Chloronapthalene

D

D

D

D

D

D

D

D

A

A

Amyl Napthalene

D

D

D

D

D

D

D

D

A

A

Aniline

D

D

A

A

D

D

C

D

C

A

Aniline Dyes

B

B

B

A

D

B

B

C

B

A

Aniline Hydrochloride

B

D

B

B

B

D

D

D

B

A

Animal Fats

D

D

B

B

A

B

B

B

A

A

Ansul Ether (Anesthetics)

D

D

C

C

C

D

D

D

D

D

Aqua Regia

D

D

D

C

D

D

A

D

B

A

Aroclor, 1248

D

D

C

C

C

D

A

B

A

A

Aroclor, 1254

D

D

D

C

D

D

D

C

A

A

Aroclor, 1260

A

A

A

A

A

A

A

B

A

A

Arsenic Acid

B

A

A

A

A

A

A

A

A

A

Arsenic Trichloride (Aqueous)

D

D

C

C

A

A

*

*

D

D

Askarel

D

D

D

D

B

D

D

D

A

A

Asphalt

D

D

D

D

B

B

B

D

A

A

Banana Oil (Amyl Acetate)

D

D

C

C

D

D

D

D

D

D

Barium Chloride (Aqueous)

A

A

A

A

A

A

A

A

A

A

Barium Hydroxide (Aqueous)

A

A

A

A

A

A

A

A

A

A

Barium Sulfate (Aqueous)

A

A

A

A

A

A

A

A

A

A

Barium Sulfide (Aqueous)

A

B

A

A

A

A

A

A

A

A

Beer

A

A

A

A

A

A

A

A

A

A

Beet Sugar Liquors

A

A

A

A

A

B

A

A

A

A

Benzaldehyde

D

D

A

A

D

D

A

B

D

D

Benzene

D

D

D

D

D

D

D

D

A

A

Benzene Sulfonic Acid (Nitrobenzine) (Pet Ether)

D

D

D

C

D

B

A

D

A

A

Benzine (Ligroin)

D

D

D

D

A

B

C

D

A

A

Benzoic Acid

D

D

D

C

C

D

D

C

A

A

Benzoyl Chloride

D

D

D

D

D

D

D

*

B

A

Benzyl Alcohol

D

D

A

A

D

B

B

B

A

A

Benzyl Benzoate

D

D

B

B

D

D

D

*

A

A

Benzyl Chloride

D

D

D

D

D

D

D

D

A

A

Biphenyl (Diphenyl) (Phenylbenzene)

D

D

D

D

D

D

D

D

A

A

Blast Furnace Gas

D

D

D

D

D

D

D

A

A

A

Bleach Solutions

D

D

A

A

D

D

A

B

A

A

Borax

B

B

A

A

B

A

A

B

A

A

Bordeaux Mixture

B

B

A

A

B

B

A

B

A

A

Boric Acid

A

A

A

A

A

A

A

A

A

A

Brine

A

A

A

A

A

A

A

A

A

A

Bromine-Anhydrous

D

D

D

D

D

D

D

D

A

A

Bromine Trifluoride

D

D

D

D

D

D

D

D

D

D

Bromine Water

D

D

C

B

D

D

A

D

A

A

Bromobenzene

D

D

D

D

D

D

D

D

A

A

Bunker Oil

D

D

D

D

A

D

D

B

A

A

Butadiene

D

D

D

C

D

D

C

D

A

A

Butane

D

D

D

D

A

A

B

D

A

A

Butter (Animal Fat)

D

D

B

A

A

B

B

B

A

A

Butyl Acetate

D

D

C

C

D

D

D

D

D

D

Butyl Acetyl Ricinoleate

D

D

A

A

C

B

B

*

A

A

Butyl Acrylate

D

D

D

D

D

D

D

*

D

D

Butyl Alcohol

A

A

B

B

A

A

A

B

A

A

Butyl Amine

D

D

C

B

C

D

D

D

D

D

Butyl Benzoate

C

B

B

B

D

D

D

*

A

A

Butyl Carbitol

D

D

A

A

D

C

B

D

C

B

Butyl Cellosolve

D

D

A

A

C

C

B

*

D

D

Butyl Oleate

D

D

B

B

D

D

D

*

A

A

Butyl Stearate

D

D

C

C

B

D

D

*

A

A

Butylene

D

D

D

D

B

C

D

D

A

A

Butyraldehyde

D

D

B

B

D

C

D

D

D

D

Calcium Acetate (Aqueous)

A

D

A

A

B

B

B

D

D

D

Calcium Bisulfite (Aqueous)

D

D

D

D

D

A

A

A

A

A

Calcium Chloride (Aqueous)

A

A

A

A

A

A

A

A

A

A

Calcium Hydroxide (Aqueous)

A

A

A

A

A

A

A

A

A

A

Calcium  Hypochlorite (Aqueous)

C

C

A

A

B

C

A

B

A

A

Calcium Nitrate (Aqueous)

A

A

A

A

A

A

A

B

A

A

Calcium Sulfide (Aqueous)

B

B

A

A

A

A

A

B

A

A

Cane Sugar Liquors

A

A

A

A

A

A

A

A

A

A

Carbamate

D

D

B

B

C

B

B

*

A

A

Carbitol

B

B

B

B

B

B

B

B

B

B

Carbolic Acid (Phenol)

D

D

B

B

D

C

D

D

A

A

Carbon Bisulfide

D

D

D

D

C

D

D

D

A

A

Carbon Dioxide

B

B

B

B

A

B

B

B

A

A

Carbonic Acid

A

B

A

A

B

A

A

A

A

A

Carbon Monoxide

B

B

A

A

A

B

B

A

A

A

Carbon Tetrachloride

D

D

D

D

C

D

D

D

A

A

Castor Oil

A

A

B

B

A

A

B

A

A

A

Cellosolve

D

D

B

B

D

D

D

D

C

D

Cellosolve Acetate

D

D

B

B

D

D

D

D

D

D

Cellulube (Fryquel)

D

D

A

A

D

D

D

A

A

A

China Wood Oil (Tung Oil)

D

D

C

C

A

B

C

D

A

A

Chlorine (Dry)

D

D

D

D

D

C

B

D

A

A

Chlorine (Wet)

D

D

C

C

D

C

C

D

B

A

Chlorine Dioxide

D

D

C

C

D

D

C

*

A

A

Chlorine Trifluoride

D

D

D

D

D

D

D

D

D

D

Chloroacetic Acid

D

D

B

A

D

D

A

*

D

C

Chloroacetone

D

D

B

A

D

C

C

D

D

C

Chlorobenzene

D

D

D

D

D

D

D

D

A

A

Chlorobromomethane

D

D

B

B

D

D

D

D

A

A

Chlorobutadiene

D

D

D

D

D

D

D

D

A

A

Chlorododecane

D

D

D

D

D

D

D

D

A

A

Chloroform

D

D

D

D

D

D

D

D

A

A

O-Chloronapthalene

D

D

D

D

D

D

D

D

A

A

1-Chloro-1-Nitro Ethane

D

D

D

D

D

D

D

D

D

D

Chlorosulfonic Acid

D

D

D

D

D

D

D

D

D

D

Chlorotoluene

D

D

D

D

D

D

D

D

A

A

Chlorox (Sodium Hypochlorite NaOC1)

D

D

B

B

B

A

B

B

A

A

Chrome Plating Solutions

D

D

B

B

D

D

D

B

A

A

Chromic Acid

D

D

C

C

D

C

B

C

A

A

Citric Acid

A

A

A

A

A

A

A

A

A

A

Coal Tar (Creosote)

D

D

D

D

A

B

D

D

A

A

Cobalt Chloride (Aqueous)

A

A

A

A

A

A

A

B

A

A

Cocoanut Oil

D

D

C

C

A

B

C

A

A

A

Cod Liver Oil

D

D

A

A

A

B

B

B

A

A

Coke Oven Gas

D

D

D

D

D

D

C

B

A

A

Copper Acetate (Aqueous)

A

D

A

A

B

B

B

D

D

D

Copper Chloride (Aqueous)

A

A

A

A

A

B

B

A

A

A

Copper Cyanide (Aqueous)

A

A

A

A

A

A

A

A

A

A

Copper Sulfate (Aqueous)

B

B

B

A

A

A

A

A

A

A

Corn Oil

D

D

C

C

A

C

B

A

A

A

Cottonseed Oil

D

D

C

B

A

B

B

A

A

A

Creosote (Coal Tar)

D

D

D

D

A

B

D

D

A

A

Cresol

D

D

D

D

D

C

D

D

A

A

Cresylic Acid

D

D

D

D

D

C

D

D

A

A

Cumene

D

D

D

D

D

D

D

D

A

A

Cyclohexane

D

D

D

D

A

C

D

D

A

A

Cyclohexanol

D

D

D

C

C

A

B

D

A

A

Cyclohexanone

D

D

B

B

D

D

D

D

D

D

P-Cymene

D

D

D

D

D

D

D

D

A

A

Decalin

D

D

D

D

D

D

D

D

A

A

Decane

D

D

D

D

A

D

C

B

A

A

Denatured Alcohol

A

A

A

A

A

A

A

A

A

A

Detergent Solutions

B

B

A

A

A

B

B

A

A

A

Developing Fluids

A

B

B

B

A

A

A

A

A

A

Diacetone

D

D

A

A

D

D

D

D

D

C

Diacetone Alcohol

D

D

A

A

D

B

B

B

D

C

Dibenzyl Ether

D

D

B

B

D

C

D

*

D

D

Dibenzyl Sebecate

D

D

B

B

D

D

D

C

B

A

Dibromoethylbenzene (Alkazene)

D

D

D

D

D

D

D

D

B

A

Dibutyl Amine

D

D

D

C

D

D

D

C

D

D

Dibutyl Ether

D

D

C

C

D

C

D

D

C

C

Dibutyl Phthalate

D

D

C

B

D

D

D

B

C

A

Dibutyl Sebecate

D

D

B

B

D

D

D

B

B

A

O-Dichlorobenzene

D

D

D

D

D

D

D

D

A

A

Dichloro-Isopropyl Ether

D

D

D

C

D

D

D

D

C

C

Dicyclohexylamine

D

D

D

D

C

D

D

D

D

Diesel Oil

D

D

D

D

A

C

C

D

A

A

Diethylamine

B

B

B

B

B

B

C

B

D

D

Diethyl Benzene

D

D

D

D

D

D

D

D

A

A

Diethyl Ether

D

D

D

D

D

C

C

D

D

D

Diethylene Glycol

A

A

A

A

A

A

A

B

A

A

Diethyl Sebecate

D

D

B

B

B

D

B

B

B

A

Diisobutylene

D

D

D

D

B

D

D

D

A

A

Diisopropyl Benzene

D

D

D

D

D

D

D

*

A

A

Diisopropyl Ketone

D

D

A

A

D

D

D

D

D

D

Diisopropylidene Acetone (Phorone)

D

D

C

C

D

D

D

D

D

D

Dimethyl Aniline (Xylidine)

C

C

C

B

C

C

D

D

D

D

Dimethyl Ether (Methyl Ether)

D

D

D

D

A

C

C

A

D

D

Dimethyl Formamide

D

D

B

B

B

C

D

B

D

D

Dimethyl Phthalate

D

D

B

B

D

D

D

*

B

A

Dinitrotoluene

D

D

D

D

D

D

D

D

D

D

Dioctyl Phtalate

D

D

B

B

C

D

D

C

B

A

Dioctyl Sebecate

D

D

B

B

D

D

D

C

B

A

Dioxane

D

D

B

B

D