O-Ring Compatibility Chart
| Property | Nitrile (Buna-N) |
Ethylene-Propylene (EP) | Fluoro- elastomer (Viton) |
PTFE* |
|---|---|---|---|---|
| Tensile Strength | Fair - Good | Good - Excellent | Good - Excellent | Excellent |
| Electrical Properties | Poor | Excellent | Good | Excellent |
| Weather Resistance | Good | Excellent | Good | Excellent |
| Ozone Resistance | Fair | Excellent | Excellent | Excellent |
| Heat Resistance | Good (225oF) | Excellent (275oF) | Excellent (400oF) | Excellent (450oF) |
| Cold Resistance | Fair - Good (-40oF) |
Good-Excellent (-55oF) |
Good (-20oF) | Fair (-110oF) |
| Steam Resistance | Good | Good | Good | Excellent |
| Tear Resistance | Good | Good | Fair | Excellent |
| Abrasion Resistance | Good | Good | Good | Excellent |
| Acid Resistance | Good | Good - Excellent | Good | Excellent |
| Petroleum Oil | Excellent | Poor | Excellent | Excellent |
| Flame Resistance | Poor | Poor | Good | Excellent |
| Vegetable Oil | Good | Good (Most) | Excellent | Excellent |
Compound Selection for Fluids and Chemicals
Choose compound from list to view O-Ring compatability rating.
| A Satisfactory |
B Fair |
C Severe Effects (except for some static applications) |
D Unsatisfactory |
E Insufficient Information |
| Compound | Nitrile (Buna-N) |
Ethylene-Propylene (EP) | Fluoro- elastomer (Viton) |
PTFE |
|---|---|---|---|---|
| Acetadehyde | D | A | D | A |
| Acetamide | A | A | B | A |
| Acetic Acid, 30% | B | A | B | A |
| Acetone | D | A | D | A |
| Acetonitrile | D | A | D | E |
| Acetophenone | D | A | D | A |
| Acetyl Chloride | D | D | A | A |
| Acetylene | D | D | C | A |
| Adipic Acid | A | A | E | A |
| Ammonia Gas (Cold) | A | A | E | A |
| Ammonium Chloride (aq) | A | A | A | A |
| Ammonium Hydroxide (conc.) | D | A | B | A |
| Ammonium Nitrate (aq) | A | A | E | A |
| Ammonium Phosphate (aq) | A | A | E | A |
| Ammonium Sulfate (aq) | A | A | A | A |
| Ammonium Phosphate (aq) | A | A | E | A |
| Amyl Acetate (Banana Oil) | D | A | D | A |
| Amyl Alcohol | B | A | B | A |
| Amyl Borate | A | D | A | A |
| Arsenic Acid | A | A | A | A |
| Arsenic Trichloride (aq) | A | C | E | A |
| Barium Chloride (aq) | A | A | A | A |
| Barium Hydroxide (aq) | A | A | A | A |
| Barium Sulfate (aq) | A | A | A | A |
| Barium Sulfide (aq) | A | A | A | A |
| Benzaldehyde | D | A | D | A |
| Benzene | D | D | A | A |
| Benzoic Acid | C | C | A | A |
| Benzoyl Chloride | D | D | A | A |
| Benzyl Alcohol | D | A | A | A |
| Benzyl Chloride | D | D | A | A |
| Boric Acid | A | A | A | A |
| Brine | A | A | A | A |
| Bromine, Anhydrous | D | D | A | A |
| Bromine Water | D | B | A | A |
| Butadlene | D | C | A | A |
| Butyl Acetate | D | C | D | A |
| Butyl Acetyl Ricinoleate | C | A | A | A |
| Butyl Alcohol | A | B | A | A |
| Butyl Amine | C | B | D | A |
| Butyl Benzoate | D | B | A | A |
| Butyl Carbitol | D | A | A | A |
| Butyl Cellosolve | D | A | D | A |
| Butyl Oleate | D | B | A | A |
| Butyl Stearate | B | C | A | A |
| Butylene | B | D | A | A |
| Butyraldehyde | D | B | D | A |
| Carbolic Acid (Phenol) | D | B | A | A |
| Carbon Bisulfide | C | D | A | A |
| Carbon Dioxide | A | B | A | A |
| Carbonic Acid | B | A | A | A |
| Carbon Monoxide | A | A | A | A |
| Carbon Tetrachloride | C | D | A | A |
| Castor Oil | A | B | A | A |
| Cellosolve Acetate | D | B | D | A |
| China Wood Oil (Tung Oil) | A | C | A | A |
| Chlorine (wet) | D | C | A | A |
| Chlorine Dioxide | D | C | A | A |
| Chloroacetic Acid | D | A | D | A |
| Chloroacetone | D | A | D | A |
| Chlorobenzene | D | D | A | A |
| Chlorobromomethane | D | B | A | A |
| Chloroform | D | D | A | A |
| Chlorotoluene | D | D | A | A |
| Chrome Plating Solutions | D | C | A | A |
| Chromic Acid | D | B | A | A |
| Cod Liver Oil | A | A | A | A |
| Copper Acetate (aq) | B | A | D | A |
| Copper Chloride (aq) | A | A | A | A |
| Copper Cyanide (aq) | A | A | A | A |
| Copper Sulfate (aq) | A | A | A | A |
| Creosote | A | D | A | A |
| Cresylic Acid | D | D | A | A |
| Cyclohexane | A | D | A | A |
| Cyclohexanol | C | C | A | A |
| Cyclohexanone | D | B | D | A |
| Denatured Alcohol | A | A | A | A |
| Detergent Solutions | A | A | A | A |
| Diacetone Alcohol | D | A | D | A |
| Dibenzyl Ether | D | B | D | A |
| Dibenzyl Sebecate | D | B | B | A |
| Dibromoethyl Benzene (Alkazene) | D | D | B | A |
| Dibutyl Amine | D | C | D | A |
| Dibutyl Ether | D | C | C | A |
| Dibutyl Phthalate | D | B | C | A |
| Dibutyl Sebecate | D | B | B | A |
| O-Dichlorobenzene | D | D | A | A |
| Dichloro-Isopropyl Ether | D | C | C | A |
| Diethylamine | B | B | D | A |
| Diethyl Benzene | D | D | A | A |
| Diethyl Ether | D | D | D | A |
| Diethylene Glycol | A | A | A | A |
| Diethyl Sebecate | B | B | B | A |
| Diisobutylene | B | D | A | A |
| Diisopropyl Benzene | D | D | A | A |
| Diisopropyl Ketone | D | A | D | A |
| Diisopropylldene Acetone | D | C | D | A |
| Dimethyl Anlline (Xylidine) | C | B | D | A |
| Dimethyl Ether (Methyl Ether) | A | D | A | A |
| Dimethyl Formamide | B | B | D | A |
| Dimethyl Phthalate | D | B | B | A |
| Dinitrotoluene | D | D | D | A |
| Dioctyl Phthalate | C | B | B | A |
| Dioctyl Sebecate | D | B | B | A |
| Dioxane | D | B | D | A |
| Dioxolane | D | B | D | A |
| Dipentene | A | D | A | A |
| Diphenyl (Phenylbenzene) | D | D | A | A |
| Diphenyl Oxides | D | D | A | A |
| Dowtherm Oil | D | D | A | A |
| Ethane | A | D | A | A |
| Ethanolamine | B | B | D | A |
| Ethyl Acetate | D | B | D | A |
| Ethyl Acetoacetate | D | B | D | A |
| Ethyl Acrylate | D | B | D | A |
| Ethyl Alcohol | A | A | C | A |
| Ethyl Benzene | D | D | A | A |
| Ethyl Benzoate | D | A | A | A |
| Ethyl Cellosolve | D | B | D | A |
| Ethyl Cellulose | B | B | D | A |
| Ethyl Chloride | A | C | A | A |
| Ethyl Chlorocarbonate | D | B | A | A |
| Ethyl Chloroformate | D | B | D | A |
| Ethyl Ether | C | C | D | A |
| Ethyl Pentachlorobenzene | D | D | A | A |
| Ethylene | A | B | A | A |
| Ethylene Chloride | D | C | B | A |
| Ethylene Dlamine | A | A | D | A |
| Ethylene Dichloride | D | B | B | A |
| Ethylene Glycol | A | A | A | A |
| Fluoroboric Acid | A | A | A | A |
| Freon 11 | B | D | A | A |
| Freon 12 | A | B | B | A |
| Freon 22 | D | A | D | A |
| Fumaric Acid | A | B | A | A |
| Gallic Acid | B | B | A | A |
| Gasoline | B | D | A | A |
| Glucose | A | A | A | A |
| Glycerin | A | A | A | A |
| Hexane | A | D | A | A |
| Hexly Alcohol | A | C | A | A |
| Hydrazine | B | A | D | A |
| Hydrobromic Acid | D | A | A | A |
| Hydrocyanic Acid | B | A | A | A |
| Hydrofluoric Acid (conc.) cold | D | C | A | A |
| Hydrofluosilicic Acid | B | B | A | A |
| Hydrogen Gas | A | A | A | A |
| Hydrogen Peroxide (90%) | D | B | B | A |
| Hydrogen Sulfide (wet) cold | D | A | D | A |
| Hydroquinone | C | B | B | A |
| Iodoform | E | D | E | A |
| Isobutyl Alcohol | B | A | A | A |
| Isooctane | A | D | A | A |
| Isopropyl Acetate | D | B | D | A |
| Isopropyl Alcohol | B | A | A | A |
| Isopropyl Chloride | D | D | A | A |
| Isopropyl Ether | B | D | D | A |
| Kerosene | A | D | A | A |
| Lacquers | D | D | D | A |
| Lactic Acid (cold) | A | A | A | A |
| Lead Acetate (aq) | B | A | D | A |
| Lead Nitrite (aq) | A | A | E | A |
| Lime Bleach | A | A | A | A |
| Linoleic Acid | B | D | B | A |
| Maleic Acid | A | B | A | A |
| Malic Acid | A | B | A | A |
| Methane | A | D | B | A |
| Methyl Acetate | D | A | D | A |
| Methyl Acrylate | D | B | D | A |
| Methylacrylic Acid | D | B | D | A |
| Methyl Alcohol | A | A | D | A |
| Methyl Bromide | B | D | A | A |
| Methyl Butyl Ketone | D | A | D | A |
| Methyl Cellosolve | B | A | A | A |
| Methyl Chloride | D | C | B | A |
| Methyl Cyclopentane | D | D | B | A |
| Methylene Chloride | D | C | B | A |
| Methyl Ether | A | D | A | A |
| Methyl Ethyl Ketone | D | A | D | A |
| Methyl Isobutyl Ketone | D | B | D | A |
| Methyl Methacrylate | D | C | D | A |
| Milk | A | A | A | A |
| Mineral Oil | A | C | A | C |
| Monoethanol Amine | D | A | D | A |
| Monomethyl Ether | A | D | A | A |
| Monovinyl Acetylene | A | A | A | A |
| Mustard Gas | E | A | E | A |
| Naphthalenic Acid | B | D | A | A |
| Natural Gas | A | D | A | A |
| Nickel Acetate (aq) | B | A | D | A |
| Lead Acetate (aq) | B | A | D | A |
| Nickel Chloride (aq) | A | A | A | A |
| Nickel Sulfate (aq) | A | A | A | A |
| Nitric Acid | D | B | A | A |
| Nitrobenzene (Ligroin) | A | D | A | A |
| Nitroethane | D | B | D | A |
| Nitrogen Tetroxide | D | C | D | A |
| Octachlorotoluene | D | D | A | A |
| Octadecane | A | D | A | A |
| N-Octane | B | D | A | A |
| Octyl Alcohol | B | C | A | A |
| Oleic Acid | C | D | B | A |
| Oxalic Acid | B | A | A | A |
| Oxygen - Cold | B | A | A | A |
| Ozone | D | C | B | A |
| Palmitic Acid | A | B | A | A |
| Perchloric Acid | D | B | A | A |
| Phenyl Ethyl Ether | D | D | D | A |
| Phosphoric Acid - 20% | B | A | A | A |
| Phosphorus Trichloride | D | A | A | A |
| Piperidine | D | A | D | A |
| Polyvinyl Acetate Emulsion | E | A | E | A |
| Potassium Acetate (aq) | B | A | D | A |
| Potassium Chloride (aq) | A | A | A | A |
| Potassium Cyanide (aq) | A | A | A | A |
| Potassium Nitrate (aq) | A | A | A | A |
| I-Propyl Acetate | D | B | D | D |
| Propyl Nitrate | D | B | D | A |
| Propylene | D | D | A | A |
| Pyridine | D | B | D | A |
| Salicylic Acid | B | A | A | A |
| Silicone Oils | A | A | A | A |
| Soap Solutions | A | A | A | A |
| Sodium Acetate (aq) | B | A | D | A |
| Sodium Bicarbonate (aq) (baking soda) | A | A | A | A |
| Sodium Borate (aq) | A | A | A | A |
| Sodium Chloride (aq) | A | A | A | B |
| Sodium Hydroxide (aq) | B | A | B | A |
| Sodium Nitrate (aq) | B | A | E | A |
| Sodium Peroxide (aq) | B | A | A | A |
| Soybean Oil | A | C | A | A |
| Steam, under 300oF | D | A | D | A |
| Stearic Acid | B | B | A | A |
| Stoddard Solvent | A | D | A | A |
| Sulfur Chloride (aq) | C | D | A | B |
| Sulfuric Acid (dilute) | C | B | A | A |
| Sulfurous Acid | B | B | A | A |
| Tannic Acid | A | A | A | A |
| Tartaric Acid | A | B | A | A |
| Tetrachloroethylene | D | D | A | A |
| Toluene | D | D | A | A |
| Triethanol Amine | B | A | D | A |
| Trioctyl Phosphate | D | A | B | A |
| Tung Oil (China Wood Oil) | A | C | A | A |
| Turpentine | A | D | A | A |
| Vegetable Oils | A | C | A | A |
| Vinegar | B | A | A | A |
| Whiskey, Wines | A | A | A | A |
| White Pine Oil | B | D | A | A |
| Zinc Chloride (aq) | A | A | A | A |