Buna n orings also referred to as nbr orings and nitrile orings are the most widely used oring material in the word because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems, and the default choice for basic applications. The named product polymer is not necessarily the primary polymer representing the highest percentage of. Rubber material selection guide nbr nitrile or buna n. Matl style code metro industries material specification rsbne60. As the freeradicals of nbr have a certain activity, the reactions of both chain. Nitrilebutadiene rubber nbr rubber, bunan irp plant. Buna rubber article about buna rubber by the free dictionary. Nitrile rubber is also referred to as bunan rubber. Shop a large range of buna n rubber sheets at msc industrial supply. When you need an oring thatas not an industry standard size, we can make one to fit your requirements.
It is the most widely used and economical elastomer. Pdf the nitrile rubber nbrunmodified montmorillonite nammt clay nanocomposites were prepared. The general operation method of mixing in the open mill is to first add the raw rubber through the roll to the front roll, and leave a proper amount of. Below is a selection of different types of nitrile rubber that we offer. Nitrile rubber nbr buna nis a general purpose material resistant to a large variety of oils and greases. Buna rubber definition of buna rubber by medical dictionary. Nitrile has very good oil and gasoline resistance, superior resistance to petroleumbased hydraulic fluids, a wide range of service temperatures, good resistance to hydrocarbon solvents, and very good resistance to alkalis and acids. Buna rubber definition of buna rubber by the free dictionary.
Nitrile 60 durometer buna nitrile rubber is a copolymer of butadiene and acrylonitrile that possesses unique physical and chemical properties that make it one of the most widely used synthetic elastomers in the world. Nitrile nbr is the polymer of choice for applications requiring oil and solvent resistance. Softer than standard buna n orings for a better seal in lowpressure applications. Les copolymeres butadieneacrylonitrile nbr pour nitrile butadiene rubber en. Nitrile rubber is resistant to oil, caustics, aliphatic hydrocarbons, and hydraulic fluids. Nitrile nbr bunan rubber rolls and sheet for gaskets. These resist grease, hydraulic oils, and motor oil. The chart below is intended to help in the material selection stage of designing rubber parts products. Nitrile rubber nbr is the general term for acrylonitrile butadiene copolymer. Rubber bonded metal skeleton chemical treatment method. Nitrile rubber, like styrenebutadiene rubber and other synthetic elastomers elastic polymers, was a product of research that took place during and between the two world wars. Nitrile rubber, also called nitrilebutadiene rubber nbr, buna n, is a synthetic rubber that provides excellent resistance to petroleumbased oils as well as mineral and vegetable oil. Matl style code metro industries material specification. Rubber is composed of many different ingredients that include the base elastomer.
Trade names include perbunan, nipol, krynac and europrene. Nitrile bunan nbr rubber is an economical material that provides high resistance to oils and hydrocarbon based fluids. General properties of elastomers elbex corporation. Nitrile rubbers are copolymers of butadiene and acrylonitrile and are frequently. Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. Polybutadiene butadiene rubber br is a synthetic rubber.
Documents for buna available in pdf, doc, xls and ppt format. Call 18006546518 epdm epdm rubber cloth inserted rolls epdm rubber. Looking for online definition of buna rubber in the medical dictionary. Milhdbk692b foreword designers and engineers, faced with the task of specifying a suitable type of rubber oring for use in aspecific application, are often hindered by lack of information as to which types of rubber will function properly under a. It is used for making oil seels,manufacturing of tank linings,protective gloves etc. Our premium grade nitrile is formulated to give maximum oil resistance and longer service life in demanding applications. A group of acrylonitrilebutadiene copolymers, given the name buna n, was patented in 1934 by german chemists erich konrad and eduard tschunkur, working for ig farben. Oring gaskets are used for general applications such as faucet repair or automotive. In order to make the rubber and metal adhere better, in. Red rubber is a general service sbr rubber compound of excellent quality. Nitrile 70, nitrile rubber properties, nitrile specifications.
The term elastomer is sometimes used to designate synthetic rubber only and is sometimes extended to include caoutchouc as well click the link for more information. Click on the links below if you are ready to place an order. Nitrile bunan sheet rubber products from warco biltrite. Crosslinked, vulcanized elastomer free of solvent which contracts. They are round and made from buna rubber for a tight seal and superior compression.
Msc industrial supply is here to support all your metalworking and maintenance repair needs with over 1 million products in stock and ready to ship today. These hard orings offer better wear resistance than standard buna n o rings. Nitrile rubber compounds were prepared by the addition of polyimide pi. Nbr offers excellent resistance to petroleumbased oils and fuels, silicone greases, hydraulic fluids, water and alcohols. Timco rubber can work with your business to design and provide nitrile parts customized for the specific needs of your applications. Pdf preparation and properties of nitrile rubbermontmorillonite. Nitrile butadiene rubber nbr and other elastomers each present their own set of characteristics and abilities to the table. This heat resistant material has been calendared and vulcanized under the strictest control.
Please go to products for more detailed information. The effect of polyimide on thermal stability of nitrile rubber was studied. General features nitrile rubber is a copolymer of acrylonitrile acn and butadiene that is generally resistant to oil, fuel, aliphatic hydrocarbons, and other chemicals, but can be attacked by ozone, aromatic hydrocarbons, ketones, esters and aldehydes. This is due to nitriles compatibility with most environments as well as its relative cost compared to other rubber materials. Identification of the substancemixture and of the companyundertaking. Its a synthetic rubber polymer known for its superior resistance to fuels such as kerosene, diesel, lubricating oils, grease and petroleum based transmission fluids. Shop a large range of buna n rub ber sheets at msc industrial supply. Polybutadiene has a high resistance to wear and is used especially in the manufacture of tires, which consumes about 70% of the production. Rubber extrusions general properties of elastomers elastomer page butyl 2 epdm ethylenepropylenediene modified 3 natural rubber 4 neoprene 5 nitrile buna n 6 polyisoprene 7 sbr styrene butadiene 8 silicone 9 summary chart 10. Finding the most appropriate elastomer for an application is not as simple as choosing a sheet colored red, white or black.
Any of a family of synthetic rubbers made from the polymerization of butadiene with a sodium catalyst. We also have nitrile sheets, nitrile rolls and quantity pricing on the items listed. Nitrile rubber nbr nitrile bunan sheet order online. Nitrile rubber, also known as nbr, bunan, and acrylonitrile butadiene rubber, is a synthetic. Information about buna rubber in the dictionary, synonyms and antonyms. Rubbercal nitrile commercial grade black 60a rubber sheet buna rubber 38 thick x 12 width x 12 length. Production via solution polymerization is carried out. Nitrile rubber, also known as nbr, buna n, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile acn and butadiene. Study of thermal stability of nitrile rubberpolyimide.
Nitrile is not suitable for solvents and chlorinated hydrocarbons. Thermodyn globals library of data sheets click the links below for printable, pdf versions of our data sheets data sheets for additional products are available upon request. It is the workhorse of oil sealing owing to costperformance compromise. Proper usage and audio pronunciation of the word buna rubber. Nitrile butadiene rubber nbr is a family of unsaturated copolymers of 2propenenitrile and various butadiene monomers 1,2butadiene. Mykins rn00170, nitrile bunan 70 durometer, is a general purpose copolymer of butadiene and acrylonitrile.
Nitrile buna n sheet rubber, commercial grade, mediumhard 60 durometer, shore a. Popular flange gasket material for hot or cold water, air and steam not exceeding 100 psi. Different nitrile compounds are available for fuels and for industrial fluids. Polybutadiene rubber is a polymer formed from the polymerization of the monomer 1,3butadiene. Nitrilebutadiene rubber bunan, nbr rubber is a synthetic polymer, the product of radical copolymerization of butadiene with acrylonitrile acn in aqueous emulsion at 30 c high temperature and at 5 c low temperature.