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Glossary » Design » Oring » Material » Butyl

Butyl (IIR) is a synthetic rubber, a copolymer of isobutylene and isoprene. Butyl rubber has excellent impermeability and good flex properties. It is impermeable to air and used in many applications requiring an airtight rubber. Butyl is vulnerable to certain acids and oils.

Butyl is suitable for dynamic and static seal of o-rings in the environment containing the following chemicals: Acetaldehyde, Acetamide, Glacial Acetic Acid, Acetic Anhydride, Acetone, Acetophenone, Acetylene Gas, Air below 200 C, Aluminium Chloride, Aluminium Flouride, Aluminium Nitrate, Anhydrous Ammonia, Cold Gas Ammonia, Ammonium Carbonate, Ammonium Chloride, Concentrated Ammonium Hydroxide, Ammonium Nitrate, Ammonium Persulfate Solution, Ammonium Phosphate, Ammonium Sulfate, Aniline, Beer, Bleach Liquor, Borax Solutions, Boric Acid, Brake Fluid, Butyl Carbitol, Butyl Cellosolve, Calcium Carbonate, Calcium Chloride, Calcium Hydroxide, Calcium Hypochlorite, Calcium Nitrate, Calcium Sulfide, Carbitol 2, Carbon Monoxide, Carbonic Acid, Citric Acid, Cod Liver Oil, Coffee, Denatured Alcohol, Diacetone, Diacetone Alcohol, Diethylamine Glycol, Dow Corning 550, Dow Guard, Epoxy Resins, Ethanol, Ethyl Acetoacetate, Ethyl Alcohol, Ethyl Chloride, Ethyl Diamine, Ethyl Hexanol, Ethyl Silicate, Ethylene Glycol, Formaldehyde, Freon 13, Freon 31, Freon 32, Freon 502 (F22+F316), Freon C318, Fuel Oil, Furfural, Gelatine, Glucose, Glycerin, General Glycol, Helium, Hydrazine, Gas Hydrobromic Acid, Hydrochloric Acid, Hydrogen Gas, Isobutyl Alcohol, Isopropanol, Hydraulic Fluid (Phosphate Ester Type) Lindol, Lye, Mercuric Chloride, Mercury, Methyl Butyl Ketone, Methyl Ethyl Ketone (MEK), MIL-H-7083, Milk, MIL-L-25681, MIL-S-81087, Monovinyl Acetate, Gas Nitrogen, Oxalic Acid, Cold Oxygen, Ozone, Phosphoric Trichloride, Potassium Nitrate, Potassium Sulfate, Propanol, Propyl Alcohol, 55 (Phosphate Ester) 53 43 Pyrogard 42, Rapeseed Oil, Sea Water, Silicone Grease, Silicone Oils, Silver Nitrate, Sodium Bicarbonate, Sodium Carbonate, Sodium Hydroxide, Sucrose Solutions, Wet Sulfur Dioxide Gas, Sulfur Hexafluoride, Sulfurous Acid, Tannic Acid, Vinegar, Fresh Water, Whiskey.

O-Ring material Butyl is usually suitable for static seal in the environment containing Aluminium Acetate, Amyl Acetate, Amyl Alcohol, Aniline Oil, Animal Oil, Arachlor 1248, Argon, Automotive Brake Fluid, Benzaldehyde, Benzophenone, Benzyl Alcohol, Benzyl Benzoate, Benzyl Chloride, Butyl Alcohol, Butyraldehyde, Carbolic Acid (Phenol), Castor Oil, Cellosolve, Chloracetic Acid, Corn Oil, Dibenzyl Ether, Diethylamine, Dimethyl Formamide, Dimethyl Phthalate, Dioxane, Ethyl Cellulose, Ethyl Formate, Ethylene, Furfuryl Alcohol, Gallic Acid, Hydrocyanic Acid, Iodine, Isopropyl Acetate, Linsed Oil, Methyl Acetate, Methyl Acrylate, Methyl Alcohol, Methyl Cellosolve, Methyl Mercaptan, Methyl Oleate, Methyl Propyl Salicylate, Methylacrylic Acid, Neatsfoot Oil, N-Hexaldehyde, Nitrobenzene, Nitroethane, Nitromethane, Nitropropane, Octyl Alcohol, Peanut Oil, Phenol, Phosphoric Acid, Propyl Acetate, Propylene Oxide, 10E Pydraul, 90E 65E 50E 30E Pydraul, Skydrol 500, Sodium Chloride, Steam to 350F, Stearic Acid, Styrene Monomer, Dry Sulfur Dioxide Gas, Liquefied Under Pressure Sulfur Dioxide, Sulfur Trioxide, Tartaric Acid, Tertiary Butyl Alcohol, Tetrabutyl Titanate, Tetrahydrofuran, Wagner 21B Brake Fluid.

O-Ring material Butyl is sometimes ok for static seal but not for dynamic seal in the environment containing chemicals such as Butter, Dibutyl Phthalate, Ethylene Dichloride, Ethylene Trichloride, Freon TF, Hexyl Alcohol, Animal Fat Lard, Methyl Isobutyl Ketone (MIBK), Nitrogen Tetroxide.

Butyl is not suitable for o-rings exposed in the environment containing chemicals such as Acetyl Chloride, Acrylonitrile, Alkazene, Hot Gas Ammonia, Amyl Borate, Amyl Chloronaphthalene, Aromatic Fuel 50%, Askarel Transformer Oil, ASTM Fuel A, ASTM Fuel B, ASTM Fuel C, ASTM Oil Four, ASTM Oil One, ASTM Oil Three, ASTM Oil Two, Automatic Transmission Fluid, Benzene, Benzene Sulfonic Acid, Benzine (Ligroin), Bromine Gas, Bromobenzene, Bunker Oil, Butane, Carbon Disulfide, Carbon Tetrachloride, Chlordane, Chlorinated Solvents, Chlorine Dioxide, Chlorine Trifluoride, Dry Chlorine, Wet Chlorine, Chloroform, Chlorosulfonic Acid, Chrome Plating Solution, Coolanol Monsanto, Coal Tar Creosote, Creosylic Acid, Cyclohexane, Dichloro-Butane, Diesel Oil, Di-ester Lubricant MIL-L-7808, Diphenyl, Dowtherm A, Elco 28 Lubricant, Ethane, Ethyl Benzene, Ethyl Benzoate, Ethyl Chlorocarbonate, Ethyl Ether, Ethyl Mercaptan, Ethyl Oxalate, Ethyl Pentachlorobenzene, Ethylene Oxide, Freon 11 (M), Freon 112, Freon 113, Freon 114B2, Freon 21, Freon 22, Furan, Automotive Gasoline, Petroleum Base Grease, Heptane, Hexane, Hydroquinone, Iso Octane, Isopropyl Chloride, Isopropyl Ether, JP 3 MIL-J5624, JP 4 MIL-J5624, JP 5 MIL-J5624, JP 6 MIL-J5624, Kerosene, Lacquer Solvents, Lacquers, Linoleic Acid, Liquefied Petroleum Gas (LPG), Petroleum Base Lubricating Oils, Malathion, Maleic Acid, Methane, Methanol, Methyl Chloride, Methyl Methacrylate, Methylene Chloride, MIL-F-25558 (RJ-1), MIL-F-25656, MIL-G-25760, MIL-H-5606, JP-5 JP-4 JP-3 MIL-J 5624, MIL-R-25576 (RP-1), Type 1 Fuel MIL-S-3136, Mineral Oils, Naphtha, Naphthalene, Naphthalenic, Natural Gas, Nitric Acid, N-Octane, N-Pentane, Oleic Acid, Oleum (Fuming Sulfuric Acid), Oronite 8200, 200-400F Oxygen, Petroleum Oil, Phenylhydrazine, Pine Oil, Producer Gas, Propane, Propylene, 540C 312F 230C Pydraul, Transformer Oil Pyranol, Radiation, Red Oil, RJ-1 (MIL-F-25558), RP-1 (MIL-R-25576), Stoddard Solvent, Sulfur Chloride, Tertiary Butyl Mercaptan, Tetrabromoethane, Tetrachloroethane, Tetrachloroethylene, Tetraethyl Lead, Tetralin, Type A Transmission Fluid, Turbine Oil, Turpentine, Varnish, White Pine Tar, Xylene.

Additional Information

There is not enough data to determine whether Butyl is suitable for using in the environment containing the following chemicals or not. Aluminium Sulfate, ASTM Fuel D, Benzoic Acid, Butadiene Monomer, Tung Oil China Wood Oil, Chromic Acid, Crude Oil (Asphalt Base), Freon 114, Freon 12, FREON R134A, Petroleum Base Hydraulic Oil, Hydrobromic Acid, Hydrofluoric Acid, Hydrogen Peroxide, Methyl Bromide, Methyl Ether, Soyabean Oil, Sulfuric Acid (Concentrated), Toluene, Triethanolamine, VV-H-910.

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