342 NBR 70 Black O-Ring

An O-ring is a loop of elastomer/rubber with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal.

The O-ring may be used in static or dynamic applications where there is relative motion between the parts and the O-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons.

O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable, and have simple mounting requirements. They can seal tens of megapascals (thousands of psi) of pressure.

Color: Black
Hardness: 70
Material: NBR
CS: 5.33 mm / 0.210 in
ID: 91.44 mm / 3.600 in

Category: O-Ring

ADD TO QUOTE

Material Specifications
Chemical Compatibility

Nitrile rubber, also known as Nitrile butadiene rubber (NBR) and Buna-N, is a synthetic copolymer composed of acrylonitrile and butadiene. Nitrile is widely used due to its resistance to oils, fuels, and other chemicals.

Properties:

Standard Compound: -40°C (-40°F) to 100°C (212°F)

Special Compound: -55°C (-67°F) to 135°C (275°F)

Hardness: 40 to 90 Shore A

ASTM D1418 Designation: NBR

ASTM D2000 Designation: BF, BG, BK, CH

Standard Colors: Black

Optional Colors:

Production:

Standard NBR compounds have a 34% acrylonitrile (ACN) content. However, the ACN content can be varied from 18% to 50% to adjust the temperature and resistance properties of the material.

Nitriles can be sulfur or peroxide cured which affects the temperature and hardness and compression set properties of the material.

Advantages:

Nitrile rubber compounds perform especially well in petroleum based fuels and oils, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, dilute acids, and water below 100°C (212°F).

Limitations:

Nitrile rubber compounds are susceptive to the ozone, ketones, ethers, esters, aromatic hydrocarbons, automotive brake fluid, strong acids, and aldehydes. Products made with Nitrile rubber, such as non-latex gloves, may spontaneously oxidize when coming into contact with strong oxidizers.

A Good B Fair C Questionable D Poor

Clear Search

Chemical	Campatibility
Acetaldehyde	D
Acetamide	A
Acetic Acid, Glacial	C
Acetic Acid, 30%	B
Acetic Anhydride	C
Acetone	D
Acetophenone	D
Acetyl Chloride	D
Acetylene	A
Acrlylonitrile	D
Adipic Acid	A
Alkazene (Dibromoethylbenzene)	D
Alum-NH3-Cr-K (Aqueous)	A
Aluminum Acetate (Aqueous)	B
Aluminum Chloride (Aqueous)	A
Aluminum Fluoride (Aqueous)	A
Aluminum Nitrate (Aqueous)	A
Aluminum Phosphate (Aqueous)	A
Aluminum Sulfate (Aqueous)	A
Ammonia Anhydrous	B
Ammonia Gas (cold)	A
Ammonia Gas (hot)	D
Ammonium Carbonate (Aqueous)	D
Ammonium Chloride (Aqueous)	A
Ammonium Hydroxide (conc.)	D
Ammonium Nitrate (Aqueous)	A
Ammonium Nitrite (Aqueous)	A
Ammonium Persulfate (Aqueous)	D
Ammonium Phosphate (Aqueous)	A
Ammonium Sulfate (Aqueous)	A
Amyl Acetate (Banana Oil)	D
Amyl Alcohol	B
Amyl Borate	A
Amyl Chloronapthalene	D
Amyl Napthalene	D
Aniline	D
Aniline Dyes	D
Aniline Hydrochloride	B
Animal Fats	A
Ansul Ether (Anesthetics)	C
Aqua Regia	D
Aroclor, 1248	C
Aroclor, 1254	D
Aroclor, 1260	A
Arsenic Acid	A
Arsenic Trichloride (Aqueous)	A
Askarel	B
Asphalt	B
Banana Oil (Amyl Acetate)	D
Barium Chloride (Aqueous)	A
Barium Hydroxide (Aqueous)	A
Barium Sulfate (Aqueous)	A
Barium Sulfide (Aqueous)	A
Beer	A
Beet Sugar Liqours	A
Benzaldehyde	D
Benzene	D
Benzene Sulfonic Acid (Nitrobenzine) (Pet Ether)	D
Benzine (Ligroin)	A
Benzoic Acid	C
Benzoyl Chloride	D
Benzyl Alcohol	D
Benzyl Benzoate	D
Benzyl Chloride	D
Biphenyl (Diphenyl) (Phenylbenzene)	D
Blast Furnace Gas	D
Bleach Solutions	D
Borax	B
Bordeaux Mixture	B
Brine	A
Bromine-Anydrous	D
Bromine Trifluoride	D
Bromine Water	D
Bromobenzene	D
Bunker Oil	A
Butadiene	D
Butter (Animal Fat)	A
Butyl Acetate	D
Butyl Acetate Ricinoleate	C
Butyl Acrylate	D
Butyl Alcohol	A
Butyl Amine	C
Butyl Benzoate	D
Butyl Carbitol	D
Butyl Cellosolve	C
Butyl Oleate	D
Butyl Stearate	B
Butylene	B
Butyraldehyde	D
Calcium Acetate (Aqueous)	B
Calcium Bisulfite (Aqueous)	D
Calcium Chloride (Aqueous)	A
Calcium Hydroxide (Aqueous)	A
Calcium Hypochlorite (Aqueous)	B
Calcium Nitrate (Aqueous)	A
Calcium Sulfide (Aqueous)	A
Cane Sugar Liqours	A
Carbamate	C
Carbitol	B
Carbolic Acid (Phenol)	D
Carbon Bisulfide	C
Carbon Dioxide	A
Carbonic Acid	B
Carbon Monoxide	A
Carbon Tetrachloride	C
Castor Oil	A
Cellosolve	D
Cellosolve Acetate	D
Cellulube (Fryquel)	D
China Wood Oil (Tung Oil)	A
Chlorine (Dry)	D
Chlorine (Wet)	D
Chlorine Dioxide	D
Chlorine Trifluoride	D
Chloroacetic Acid	D
Chloroacetone	D
Cholorobenzene	D
Chlorobromomethane	D
Chlorobutadiene	D
Chlorododecane	D
Chloroform	D
O-Chloronapthalene	D
1-Chloro-1-Nitro Ethane	D
Chlorosulfonic Acid	D
Chlorotoluene	D
Chlorox (Sodium Hypochlorite NAOCl)	B
Chrome Plating Solutions	D
Chromic Acid	D
Citric Acid	A
Coal Tar (Creosote)	A
Cobalt Chloride (Aqueous)	A
Cocoanut Oil	A
Cod Liver Oil	A
Coke Oven Gas	D
Copper Acetate (Aqueous)	B
Copper Chloride (Aqueous)	A
Copper Cyanide (Aqueous)	A
Copper Sulfate (Aqueous)	A
Corn Oil	A
Cottonseed Oil	A
Creosote (Coal Tar)	A
Cresol	D
Cresylic Acid	D
Cumene	D
Cyclohexane	A
Cyclohexanol	C
Cyclohexanone	D
P-Cymene	D
Decalin	D
Decane	A
Denatured Alcohol	A
Detergent Solutions	A
Developing Fluids	A
Diacetone	D
Diacetone Alcohol	D
Dibenzyl Ether	D
Dibenzyl Sebecate	D
Dibromoethylbenzene	D
Dibutyl Amine	D
Dibutyl Ether	D
Dibutyl Phthalate	D
Dibutyl Sebecate	D
O-Dichlorobenzene	D
Dichloro-Isopropyl Ether	D
Dicyclohexylamine	C
Diesel Oil	A
Diethylamine	B
Diethyl Benzene	D
Diethyl Ether	D
Diethylene Glycol	A
Diethyl Sebecate	B
Diisobutylene	B
Diisopropyl Benzene	D
Diisopropyl Ketone	D
Diisopropylidene Acetone (Phorone)	D
Dimethyl Aniline (Xylidine)	C
Dimethyl Ether (Methyl Ether)	A
Dimethyl Formamide	B
Dimethyl Phthalate	D
Dinitrotoluene	D
Dioctyl Phtalate	C
Dioctyl Sebecate	D
Dioxane	D
Dioxolane	D
Dipentene	B
Diphenyl (Biphenyl) (Phenylbenzene)	D
Diphenyl Oxides	D
Dowtherm Oil	D
Dry Cleaning Fluids	C
Epichlorohydrin	D
Ethane	A
Ethanolamine	B
Ethyl Acetate	D
Ethyl Acetoacetate	D
Ethyl Acrylate	D
Ethyl Alcohol	A
Ethyl Benzene	D
Ethyl Benzoate	D
Ethyl Cellosolve	D
Ethyl Cellulose	B
Ethyl Chloride	A
Ethyl Chlorocarbonate	D
Ethyl Chloroformate	D
Ethyl Ether	C
Ethyl Formate	D
Ethyl Mercaptan	D
Ethyl Oxalate	D
Ethyl Pentachlorobenzene	D
Ethyl Silicate	A
Ethylene	A
Ethylene Chloride	D
Ethylene Chlorohydrin	D
Ethylene Diamine	A
Ethylene Dichloride	D
Ethylene Glycol	A
Ethylene Oxide	D
Ethylene Trichloride	D
Fatty Acids	B
Ferric Chloride (Aqueous)	A
Ferric Nitrate (Aqueous)	A
Ferric Sulfate (Aqueous)	A
Fish Oil	A
Fluorinated Cyclic Ethers	*
Fluorine (Liquid)	D
Fluorobenzene	D
Fluoroboric Acid	A
Fluorocarbon Oils	*
Fluorolube	A
Fluorosilicic Acid (Hydrofluosilicic Acid)	A
Formaldehyde (RT)	C
Formic Acid	B
Freon 11	B
Freon 12	A
Freon 13	A
Freon 21	D
Freon 22	D
Freon 31	D
Freon 32	A
Freon 112	B
Freon 113	A
Freon 114	A
Freon 115	A
Freon 142b	A
Freon 152b	A
Freon 218	A
Freon C316	A
Freon C318	A
Freon 13B1	A
Freon 114B2	B
Freon 502	B
Freon TF	A
Freon T-WD602	B
Freon TMC	B
Freon T-P35	A
Freon TA	A
Freon TC	A
Freon MF	A
Freon BF	B
Fuel Oil	A
Fumaric Acid	A
Furan, Furfuran	D
Furfural	D
Fyquel (Cellulube)	D
Gallic Acid	B
Gasoline	B
Gelatin	A
Glauber’s Salt (Aqueous)	D
Glucose	A
Glue	A
Glycerin	A
Glycols	A
Green Sulfate Liquor	B
Halowax Oil	D
N-Hexaldehyde	D
Hexane	A
N-Hexene-1	B
Hexyl Alcohol	A
Hydrazine	B
Hydraulic Oil (Petroleum)	A
Hydrobromic Acid	D
Hydrobromic Acid 40%	D
Hydrochloric Acid (Cold) 37%	C
Hydrochloric Acid (Hot) 37%	D
Hydrocyanic Acid	B
Hydrofluoric Acid (Conc.) Cold	D
Hydrofluoric Acid (Conc.) Hot	D
Hydrofluoric Acid- Anhydrous	D
Hydrofluosilicic Acid (Fluosilicic Acid)	A
Hydrogen Gas	A
Hydrogen Peroxide (90%)	D
Hydrogen Sulfide (Wet) Cold	D
Hydrogen Sulfide (Wet) Hot	D
Hydroquinone	C
Hypochlorous Acid	D
Iodine Pentafluoride	D
Iodoform	*
Isobutyl Alcohol	B
Isooctane	A
Isophorone	D
Isopropyl Acetate	D
Isopropyl Alcohol	B
Isopropyl Chloride	D
Isopropyl Ether	B
Kerosene	A
Lacquers	D
Lacquer Solvents	D
Lactic Acid (Cold)	A
Lactic Acid (Hot)	D
Lard	A
Lavendar Oil	B
Lead Acetate (Aqueous)	B
Lead Nitrate (Aqueous)	A
Lead Sulfamate (Aqueous)	B
Ligroin (Benzine) (Nitrobenzine)	A
Lime Bleach	A
Lime Sulfur	D
Lindol (Hydraulic Fluid)	D
Linoleic Acid	B
Linseed Oil	A
Liquefied Petroleum Gas	A
Lubricating Oils (Petroleum)	A
Lye	B
Magnesium Chloride (Aqueous)	A
Magnesium Hydroxide (Aqueous)	B
Magnesium Sulfate (Aqueous)	A
Maleic Acid	D
Malic Acid	D
Mercury Chloride (Aqueous)	A
Mercury	A
Mesityl Oxide	D
Methane	A
Methyl Acetate	D
Methyl Acrylate	D
Methylacrylic Acid	D
Methyl Alcohol	A
Methyl Bromide	B
Methyl Butyl Ketone (Propyl Acetone)	D
Methyl Cellosolve	C
Methyl Chloride	D
Methyl Cyclopentane	D
Methylene Chloride	D
Methyl Ether (Dimethyl Ether)	A
Methyl Ethyl Ketone	D
Methyl Formate	D
Methyl Isobutyl Ketone	D
Methyl Methacrylate	D
Methyl Oleate	D
Methyl Salicylate	D
Milk	A
Mineral Oil	A
Monochlorobenzene	D
Monomethyl Aniline	D
Monoethanol Amine	D
Monomethyl Ether (Methyl Ether)	A
Monovinyl Acetylene	A
Mustard Gas	*
Naphtha	B
Naphthalene	D
Naphthalenic Acid	B
Natural Gas	A
Neats Foot Oil	A
Neville Acid	D
Nickel Acetate (Aqueous)	B
Nickel Chloride (Aqueous)	A
Nickel Sulfate (Aqueous)	A
Niter Cake	A
Nitric Acid (Conc.)	D
Nitric Acid (Dilute)	D
Nitric Acid-Red Fuming	D
Nitrobenzene	D
Nitrobenzene (Petroleum Ether)	A
Nitroethane	D
Nitrogen	A
Nitrogen Tetroxide	D
Nitromethane	D
Octachlorotoluene	D
Octadecane	A
N-Octane	B
Octyl Alcohol	B
Oleic Acid	C
Oleum Spirits	B
Olive Oil	A
O-Dichlorobenzene	D
Oxalic Acid	B
Oxygen-Cold	B
Oxygen-(200-400oF)	D
Ozone	D
Paint Thinner, Duco	D
Palmitic Acid	A
Peanut Oil	A
Perchloric Acid	D
Perchloroethylene	B
Petroleum-Below 250oF	A
Petroleum-Above 250oF	D
Phenol (Carbolic Acid)	D
Phenylbenzene (Biphenyl) (Diphenyl)	D
Phenyl Ethyl Ether	D
Phenyl Hydrazine	D
Phorone (Diisopropylidene Acetone)	D
Phosphoric Acid-20%	B
Phosphoric Acid-45%	D
Phosphorus Trichloride	D
Pickling Solution	D
Picric Acid	B
Pinene	B
Pine Oil	D
Piperidine	D
Plating Solution- Chrome	*
Plating Solution- Others	A
Polyvinyl Acetate Emulsion	*
Potassium Acetate (Aqueous)	B
Potassium Chloride (Aqueous)	A
Potassium Cupro Cyanide	A
Potassium Cyanide (Aqueous)	A
Potassium Dichromate (Aqueous)	A
Potassium Hydroxide (Aqueous)	A
Potassium Nitrate (Aqueous)	A
Potassium Sulfate (Aqueous)	A
Producer Gas	A
Propane	A
i-Propyl Acetate	D
n-Propyl Acetate	D
Propyl Acetone (Methyl Butyl Ketone)	D
Propyl Alcohol	A
Propyl Nitrate	D
Propylene	D
Propylene Oxide	D
Pydraul, 10E, 29 ELT	D
Pydraul, 30E, 50E, 65E, 90E	D
Pydraul, 115E	D
Pydraul, 230E, 312C, 540C	D
Pyranol, Transformer Oil	A
Pyridine	D
Pyroligneous Acid	D
Pyrrole	D
Radiation	C
Rapeseed Oil	B
Red Oil (MIL-H-5606)	A
RJ-1 (MIL-F-25558 B)	A
RP-1 (MIL-F-25576 C)	A
Sal Ammoniac	A
Salicylic Acid	B
Salt Water	A
Sewage	A
Silicate Esters	B
Silicone Greases	A
Silicone Oils	A
Silver Nitrate	B
Skydrol 500	D
Skydrol 7000	D
Soap Solutions	A
Soda Ash	A
Sodium Acetate (Aqueous)	B
Sodium Bicarbonate (Aqueous)(Baking Soda)	A
Sodium Bisulfite (Aqueous)	A
Sodium Borate (Aqueous)	A
Sodium Chloride (Aqueous)	A
Sodium Cyanide (Aqueous)	A
Sodium Hydroxide (Aqueous)	B
Sodium Hypochlorite (Aqueous) (Chlorox)	B
Sodium Metaphosphate (Aqueous)	A
Sodium Nitrate (Aqueous)	B
Sodium Perborate (Aqueous)	B
Sodium Peroxide (Aqueous)	B
Sodium Phosphate (Aqueous)	A
Sodium Silicate (Aqueous)	A
Sodium Sulfate (Aqueous)	A
Sodium Thiosulfate (Aqueous)	B
Soybean Oil	A
Stannic Chloride (Aqueous)	A
Stannous Chloride (Aqueous)	A
Steam Under 300oF	D
Steam Over 300oF	D
Stearic Acid	B
Stoddard Solvent	A
Styrene	D
Sucrose Solution	A
Sulfite Liquors	B
Sulfur	D
Sulfur Chloride (Aqueous)	C
Sulfur Dioxide (Dry)	D
Sulfur Dioxide (Wet)	D
Sulfur Dioxide (Liquified Under Pressure)	D
Sulfur Hexafluoride	B
Sulfur Trioxide	D
Sulfuric Acid (Dilute)	C
Sulfuric Acid (conc.)	D
Sulfuric Acid (20% Oleum)	D
Sulfurous Acid	B
Tannic Acid	A
Tar, Bitruminous	B
Tartaric Acid	A
Terpineol	B
Tertiary Butyl Alcohol	B
Tertiary Butyl Catechol	D
Tertiary Butyl Mercaptan	D
Tetrabromoethane	D
Tetrabromomethane	D
Tetrabutyl Titanate	B
Tetrachloroethylene	D
Tetrahydrofuran	D
Tetralin	D
Thionyl Chloride	D
Titanium Tetrachloride	B
Toluene	D
Toluene Diisocyanate	D
Transformer Oil	A
Transmission Fluid Type A	A
Triacetin	B
Triaryl Phosphate	D
Tributoxy Ethyl Phosphate	D
Tributyl Mercaptan	D
Tributyl Phosphate	D
Trichloroacetic Acid	B
Trichloroethane	D
Trichloroethylene	D
Tricresyl Phosphate	D
Trethanol Amine	B
Triethyl Aluminum	D
Triethyl Borane	D
Trinitrotoluene	D
Trioctyl Phosphate	D
Tung Oil (China Wood Oil)	A
Turbine Oil	B
Turpentine	A
Usymmetrical Dimethyl Hydrazine	B
Varnish	B
Vegetable Oils	A
Versilube F-50	A
Vinegar	B
Vinyl Chloride	D
Wagner 21B Brake Fluid	C
Water	A
Whiskey, Wines	A
White Pine Oil	B
White Oil	A
Wood Oil	A
Xylene	D
Xylidine (Di-methyl Aniline)	C
Zeolites	A
Zinc Acetate (Aqueous)	B
Zinc Chloride (Aqueous)	A
Zinc Sulfate (Aqueous)	A

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16.00x2.50 NBR 70 Black O-Ring

ID 16.00 mm

CS 2.50 mm

PN Metric-70-Black-NBR-o-ring-16.00x2.50

NBR
Hardness 70
ID 16.00 mm
CS 2.50 mm
Black

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16.00x2.50 NBR 70 Black O-Ring

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49.00x3.00 EPDM 70 Black O-Ring

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3.50x2.00 SILICONE 70 Rust O-Ring

398.00x4.00 FKM/Viton™ 75 BROWN O-Ring

465.00x5.00 SILICONE 70 Rust O-Ring

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30.00x4.00 NBR 70 Black O-Ring

12.50x1.00 EPDM 70 Black O-Ring

90.00x2.50 NBR 70 Black O-Ring

22.00x5.00 FKM/Viton™ 75 BROWN O-Ring

265 SILICONE 70 Rust O-Ring

199.00x4.00 NBR 70 Black O-Ring

112.00x2.50 NBR 70 Black O-Ring

109 NBR 70 Black O-Ring

105.00x3.00 NBR 70 Black O-Ring

311.00x4.00 NBR 70 Black O-Ring

906 11.89x1.98 NBR 70 Black O-Ring

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236.00x5.00 NBR 70 Black O-Ring

277 NBR 70 Black O-Ring

16.00x2.00 NBR 70 Black O-Ring

210.00x6.00 NBR 70 Black O-Ring

37.00x5.00 NBR 70 Black O-Ring

286.00x5.00 NBR 70 Black O-Ring

378 NBR 70 Black O-Ring

042 NBR 70 Black O-Ring

432 135.89x6.99 NBR 70 Black O-Ring

55.00x6.00 NBR 70 Black O-Ring

368 NBR 70 Black O-Ring

373.00x4.00 NBR 70 Black O-Ring

79.00x5.00 NBR 70 Black O-Ring

126.00x2.50 NBR 70 Black O-Ring

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101.00x4.00 NBR 70 Black O-Ring

244.00x5.00 NBR 70 Black O-Ring

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38.50x2.00 NBR 70 Black O-Ring

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