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Nitrile Rubbers (NBR) additional properties include resistance to heat, abrasion, and water, as well as resistance to gas permeation.
Nitrile Rubbers (NBR) is frequently plasticized with organic phosphate, phthalic ester, or dibenzyl ether.
Nitrile Rubbers (NBR), also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene.
CAS Number: 9003-18-3
Molecular Formula: C7H9N
Molecular Weight: 107.16
EINECS Number: 231-675-1
Synonyms: POLY(ACRYLONITRILE-CO-BUTADIENE) 30-35&;POLY(ACRYLONITRILE-CO-BUTADIENE), 37-39 WT. % ACRYLONITRILE;POLY(ACRYLONITRILE-CO-BUTADIENE) 19-22&;Acrylonitrile-1,3-butadiene copolymer;Poly(acrylonitrile-co-butadiene) acrylonitrile 37-39 wt. %;POLY(ACRYLONITRILE-CO-BUTADIENE);POLY(BUTADIENE/ACRYLONITRILE);POLY(BUTADIENE/ACRYLONITRILE), AMINE TERMINATED
Nitrile Rubbers (NBR) is important for its high oil and temperature resistance.
Nitrile Rubbers (NBR) flexibility at very low temperatures is obtained with lower acrylonitrile content: in turn, this sacrifices some oil resistance.
Low-temperature flexibility for some applications can be modified by plasticizers or blends.
Trade names include Perbunan, Nipol, Krynac and Europrene.
Nitrile Rubbers (NBR) rubber is unusual in being resistant to oil, fuel, and other chemicals.
Nitrile Rubbers (NBR) is widely used in industry because it provides a rare combination of elasticity and strong resistance to nonpolar liquids such as oils, fuels, and many lubricants, which most common rubbers cannot withstand for long periods.
Nitrile Rubbers (NBR) chemical resistance comes mainly from the polar nitrile groups in its structure.
Nitrile Rubbers (NBR) makes it essential in petroleum and automotive environments.
The material shows good mechanical strength and wear resistance, allowing it to maintain performance under repeated compression, friction, and dynamic movement in sealing and hose applications.
Nitrile Rubbers (NBR) durability makes it suitable for parts that are constantly under mechanical stress.
Nitrile Rubbers (NBR) makes it important in dynamic rubber systems.
Nitrile Rubbers (NBR) also has adjustable thermal and chemical properties depending on formulation additives, fillers, and acrylonitrile content, which allows manufacturers to fine-tune performance for specific operating conditions.
Nitrile Rubbers (NBR) flexibility is a key advantage in industrial rubber design.
This makes it a highly engineered elastomer system.
Because it is a copolymer, Nitrile Rubbers (NBR) can be processed using standard rubber compounding techniques such as milling, extrusion, and molding, often combined with curing (vulcanization) to improve elasticity and mechanical stability.
Vulcanization introduces crosslinks that enhance strength and durability.
Nitrile Rubbers (NBR) makes it important in rubber processing technology.
Nitrile Rubbers (NBR) is often modified with plasticizers, reinforcing fillers like carbon black or silica, and stabilizers to improve hardness, tensile strength, aging resistance, and processing behavior.
These additives allow precise control of final product properties.
Nitrile Rubbers (NBR) makes it important in formulation engineering.
Nitrile Rubbers (NBR) is considered moderate, meaning it performs well against oils and fuels but can degrade under prolonged ozone exposure, UV radiation, or extreme weather unless specially stabilized.
Nitrile Rubbers (NBR) limits its use in long-term outdoor applications without protective formulations.
Nitrile Rubbers (NBR) makes stabilization important in durability engineering.
Nitrile Rubbers (NBR), also called acrylonitrile–butadiene rubber, is a synthetic elastomer produced by the copolymerization of acrylonitrile and butadiene, widely used because of its excellent resistance to oils, fuels, and many chemicals.
Nitrile Rubbers (NBR) is a rubber-like material that remains flexible while offering strong chemical resistance compared with natural rubber.
This makes it an important industrial sealing and mechanical material.
Nitrile Rubbers (NBR) depend strongly on the ratio of acrylonitrile to butadiene, where higher acrylonitrile content increases oil resistance but reduces flexibility at low temperatures.
This tunability allows manufacturers to design grades for specific applications.
Nitrile Rubbers (NBR) makes it a highly customizable engineering elastomer.
Nitrile Rubbers (NBR) is a random copolymer containing polar nitrile (–C≡N) groups along a hydrocarbon polymer backbone, which gives it improved resistance to swelling in oils and hydrocarbons.
These polar groups increase interaction resistance with nonpolar liquids like fuels.
This makes it especially useful in petroleum-related environments.
Nitrile Rubbers (NBR) is best described as a specialty synthetic rubber designed for oil-resistant sealing, gasketing, and industrial applications where conventional rubbers would degrade or swell.
Its value lies in combining elasticity with chemical resistance.
Nitrile Rubbers (NBR) makes it one of the most widely used industrial elastomers.
Nitrile Rubbers (NBR) is considered a performance elastomer because its properties are not fixed but can be systematically engineered by adjusting monomer composition, crosslink density, and compounding additives.
This allows manufacturers to design grades ranging from soft, flexible rubbers to harder, more rigid sealing materials.
Nitrile Rubbers (NBR) makes it a highly adaptable industrial polymer system.
One of the key structural features of NBR is its polar nitrile group distribution along an otherwise nonpolar hydrocarbon backbone, which creates a unique balance between oil resistance and elastomeric flexibility.
This polarity difference is the main reason for its chemical resistance to fuels and lubricants.
Nitrile Rubbers (NBR) makes it essential in hydrocarbon-resistant materials.
Nitrile Rubbers (NBR) exhibits viscoelastic behavior, meaning it shows both elastic (spring-like) and viscous (energy-dissipating) responses when subjected to mechanical stress or deformation over time.
This property is critical in damping vibration and absorbing mechanical shocks.
Nitrile Rubbers (NBR) makes it important in dynamic mechanical applications.
Nitrile Rubbers (NBR) is strongly influenced by its molecular weight distribution and acrylonitrile content, which affect viscosity, flow behavior, and ease of molding during industrial fabrication.
These parameters must be tightly controlled for consistent product quality.
Nitrile Rubbers (NBR) makes process control important in rubber manufacturing.
Density: 1 g/mL at 25 °C
form: slab/chunk
Viscosity: 70–80 Mooney (lit.)
Cosmetics Ingredients Functions: VISCOSITY CONTROLLING; FILM FORMING
InChI: 1S/C4H6.C3H3N/c1-3-4-2;1-2-3-4/h3-4H,1-2H2;2H,1H2
InChIKey: NTXGQCSETZTARF-UHFFFAOYSA-N
SMILES: N#CC=C.C(=C)C=C
Nitrile Rubbers (NBR), also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile and butadiene.
Trade names include Perbunan, Nipol, Krynac and Europrene.
Nitrile Rubbers (NBR) is unusual in being resistant to oil, fuel, and other chemicals.
Nitrile Rubbers (NBR) is produced through emulsion polymerization, a process where acrylonitrile and butadiene are polymerized in water using surfactants and initiators to form rubber latex, which is later coagulated and processed into solid rubber.
This industrial method allows large-scale, controlled production of consistent material properties.
Nitrile Rubbers (NBR) makes it important in polymer manufacturing technology.
The presence of acrylonitrile groups gives Nitrile Rubbers (NBR) strong resistance to swelling in oils, fuels, and many hydrocarbons, making it suitable for contact with petroleum-based fluids.
This property is critical in fuel system components and hydraulic seals.
Nitrile Rubbers (NBR) makes it valuable in chemical-resistant elastomer design.
At the same time, the butadiene component provides elasticity, flexibility, and mechanical strength, allowing the material to stretch and recover without permanent deformation under stress.
Nitrile Rubbers (NBR) balance is essential for dynamic sealing applications.
Nitrile Rubbers (NBR) makes it important in mechanical performance engineering.
Nitrile Rubbers (NBR) shows good abrasion resistance and moderate heat resistance, but its performance can degrade at very high temperatures or under strong ozone exposure unless stabilized with additives.
This limits its use in extreme outdoor conditions unless formulated properly.
Nitrile Rubbers (NBR) makes stabilization important in rubber compounding.
Because of its polar nature, Nitrile Rubbers (NBR) can be compounded with fillers, plasticizers, and reinforcing agents like carbon black to adjust hardness, tensile strength, and processing behavior.
This enables tailoring for different industrial requirements.
Nitrile Rubbers (NBR) makes it a highly flexible materials platform.
Nitrile Rubbers (NBR) can also be modified into hydrogenated nitrile rubber (HNBR), which offers improved heat, ozone, and aging resistance while retaining oil resistance.
This upgraded form is used in more demanding automotive and industrial applications.
Nitrile Rubbers (NBR) makes it important in advanced elastomer development.
Nitrile Rubbers (NBR) is produced by polymerization of acrylonitrile and butadiene in varying proportions.
The basic steps are the emulsion polymerization techniques used for styrene– butadiene.
The process yields both “hot” and “cold” rubber.
Hot rubbers are branched and contain some cross-linked gel.
The more linear cold rubbers are slightly cross-linked by incorporating divinyl benzene to improve processability and compression set resistance.
Nitrile Rubbers (NBR) is used in the automotive and aeronautical industry to make fuel and oil handling hoses, seals, grommets, and self-sealing fuel tanks.
Nitrile Rubbers (NBR) is also used in the food service, medical, and nuclear industries to make protective gloves.
Nitrile Rubbers (NBR)'s stability at temperatures from −40 to 108 °C (−40 to 226 °F) makes it an ideal material for aeronautical applications.
Nitrile butadiene is also used to produce moulded goods, footwear, adhesives, sealants, sponges, expanded foams, and floor mats.
Nitrile Rubbers (NBR) can be formulated into foamed or sponge rubber structures by introducing blowing agents, creating lightweight materials with compressibility and sealing capability for insulation and cushioning applications.
These foamed variants expand its range beyond solid elastomers.
Nitrile Rubbers (NBR) makes it useful in lightweight material engineering.
Nitrile Rubbers (NBR) is often combined with other rubbers such as PVC, EPDM, or hydrogenated nitrile rubber (HNBR) to improve specific properties like weather resistance, ozone stability, or thermal endurance.
These blends allow fine-tuning of performance for demanding environments.
Nitrile Rubbers (NBR) makes it important in hybrid polymer technology.
Uses Of Nitrile Rubbers (NBR):
Applications include fuel lines, hoses, automobile parts, structural adhesives, oil-resistant clothing or articles, gloves, and shoe soles and heels.
Gloves made of nitrile rubber are comparable to neoprene gloves in their resistance to organic solvents; nitrile rubber gloves were superior in resistance to II-hexane and inferior in resistance to phenol. NBR is used for hoses, gaskets, and protective clothing.
Nitrile Rubbers (NBR) is widely used in oil-resistant seals, O-rings, gaskets, and hoses in automotive and industrial machinery, where exposure to fuels and lubricants is common.
Nitrile Rubbers (NBR) maintains sealing performance without swelling or degrading in hydrocarbons.
This makes it essential in sealing technology.
In the automotive industry, Nitrile Rubbers (NBR) is used in fuel hoses, transmission seals, hydraulic seals, and vibration-damping components, where chemical and mechanical resistance are required.
It ensures reliable performance under harsh operating conditions.
Nitrile Rubbers (NBR) makes it important in vehicle engineering.
Nitrile Rubbers (NBR) is used for protective gloves, conveyor belts, rollers, and industrial hoses that must resist oils, greases, and mechanical wear.
These applications rely on both flexibility and durability.
Nitrile Rubbers (NBR) makes it valuable in industrial manufacturing.
In aerospace and mechanical systems, it is used in hydraulic systems and fuel handling components where resistance to petroleum-based fluids is critical.
Nitrile Rubbers (NBR) helps maintain system integrity and safety under pressure.
Nitrile Rubbers (NBR) makes it useful in high-performance engineering systems.
Nitrile Rubbers (NBR) is used in disposable and reusable gloves for chemical handling, laboratory work, and medical protection due to its chemical resistance.
It provides a barrier against oils and certain chemicals.
Nitrile Rubbers (NBR) makes it important in protective equipment.
In adhesives and modified rubber blends, Nitrile Rubbers (NBR) is used to improve oil resistance and mechanical strength when blended with other elastomers or resins.
This allows customization of material performance for specialized uses.
Nitrile Rubbers (NBR) makes it important in polymer blending applications.
Nitrile Rubbers (NBR) is widely used in automotive fuel system components such as hoses, seals, and gaskets because it resists swelling and degradation when exposed to gasoline, diesel, and lubricating oils.
This ensures long-term reliability in fuel handling systems.
Nitrile Rubbers (NBR) makes it essential in automotive engineering.
In industrial machinery, Nitrile Rubbers (NBR) is used for hydraulic seals, O-rings, and gaskets that must maintain tight sealing performance under pressure while resisting oil-based hydraulic fluids.
These components are critical for preventing leaks and maintaining system efficiency.
Nitrile Rubbers (NBR) makes it important in hydraulic systems.
In manufacturing equipment, Nitrile Rubbers (NBR) is used in rollers, conveyor belts, and flexible couplings where resistance to abrasion, oils, and mechanical stress is required.
Nitrile Rubbers (NBR) helps extend equipment lifetime in harsh industrial environments.
This makes it useful in industrial production systems.
Nitrile Rubbers (NBR) is used in chemical-resistant gloves for laboratory, medical, and industrial use, where protection from oils and moderate chemicals is necessary.
It provides a barrier while maintaining flexibility and dexterity.
Nitrile Rubbers (NBR) makes it important in safety applications.
In aerospace and engineering systems, Nitrile Rubbers (NBR) is used in fuel handling and hydraulic components where both chemical resistance and mechanical reliability under pressure are required.
It contributes to safe and stable system operation.
Nitrile Rubbers (NBR) makes it valuable in high-performance engineering.
In adhesives and modified elastomer blends, Nitrile Rubbers (NBR) is used to enhance oil resistance and improve mechanical strength when combined with other polymers or resins.
This allows designers to tailor material behavior for specialized applications.
Nitrile Rubbers (NBR) makes it important in polymer blending technology.
Nitrile Rubbers (NBR) is widely used in automotive fuel and oil sealing systems, including O-rings, gaskets, and hoses that must resist swelling and degradation when exposed to hydrocarbons and lubricants.
This ensures long-term sealing performance in engine and fuel systems.
Nitrile Rubbers (NBR) makes it essential in automotive sealing technology.
In industrial hydraulic systems, Nitrile Rubbers (NBR) is used for seals, diaphragms, and hoses that must withstand pressure, mechanical stress, and exposure to oil-based hydraulic fluids.
These components are critical for safe and efficient machine operation.
Nitrile Rubbers (NBR) makes it important in hydraulic engineering.
In industrial machinery, Nitrile Rubbers (NBR) is used in rollers, conveyor belts, and drive components where abrasion resistance, flexibility, and oil resistance are required simultaneously.
This helps maintain stable performance in harsh production environments.
Nitrile Rubbers (NBR) makes it useful in mechanical system design.
In protective equipment, Nitrile Rubbers (NBR) is used in chemical-resistant gloves and barrier materials that protect against oils, greases, and moderate industrial chemicals while maintaining flexibility.
This combination is important for safety and dexterity.
Nitrile Rubbers (NBR) makes it valuable in occupational protection.
In construction and infrastructure applications, Nitrile Rubbers (NBR) is used in vibration dampers, sealing membranes, and flexible joints that help absorb movement and prevent leakage in building systems.
This improves structural durability and service life.
Nitrile Rubbers (NBR) makes it important in civil engineering materials.
In modified polymer systems, Nitrile Rubbers (NBR) is used to enhance oil resistance and mechanical performance when blended with other elastomers or resins in specialized industrial formulations.
This allows the creation of tailored material systems for specific technical requirements.
Nitrile Rubbers (NBR) makes it important in polymer engineering.
Safety Profile Of Nitrile Rubbers (NBR):
Nitrile Rubbers (NBR) in its finished form is generally considered a low hazard material because it is a stable polymer and not highly reactive under normal conditions.
Most safety concerns relate to processing rather than end-use materials.
Nitrile Rubbers (NBR) makes it relatively safe in solid form.
During manufacturing or high-temperature processing, Nitrile Rubbers (NBR) can release decomposition products such as nitrile-containing vapors and other volatile organic compounds if overheated or burned.
These fumes may be irritating or harmful if inhaled.
Nitrile Rubbers (NBR) makes thermal safety important in processing environments.
Contact with uncured additives or processing chemicals used in Nitrile Rubbers (NBR) production may cause skin or eye irritation depending on formulation components such as plasticizers, accelerators, or curing agents.
These risks are mainly relevant during manufacturing rather than final products.
Nitrile Rubbers (NBR) makes industrial hygiene important.
Inhalation of dust from rubber processing can cause respiratory irritation in occupational settings where grinding or cutting of rubber materials generates particulate matter.
Proper ventilation and dust control are required in workshops.
Nitrile Rubbers (NBR) makes engineering controls important.
Nitrile Rubbers (NBR) itself is not considered highly toxic or reactive, but burning rubber materials can produce smoke and gases that are hazardous and should not be inhaled under fire conditions.
Fire safety precautions are therefore necessary in storage and industrial environments.
This makes combustion safety important.
Nitrile Rubbers (NBR) is a stable and widely used industrial elastomer with low inherent hazard in final form, but requiring standard safety controls during manufacturing, processing, and thermal exposure situations.
