Nitrile butadiene rubber nbr. Epdm while nbr and fkm have similar chemical resistance epdm is completely different.
Formulation Of Nbr Epdm Compound Download Table
Epdm and nbr difference. The lip sealing ring ensures quick and efficient jointing of the pipe system while providing a tight seal in case of both pressure and vacuum. There are 10 material properties with values for both materials. Blücher sealing rings are available in three different rubber qualities epdm nbr and fpm. Synthetic rubber comes in nearly a dozen major types with differing properties for various applications. However an sbr product will have a much better resistance to abrasions than an epdm product would. Epdm is known as m class rubber since it has saturated chains of polymethylene.
The biggest differences between these two rubber products lie in their resistance to petroleum based fuel and lubrication products and their resistance to weathering. Nbr epdm what is nbr and what are the applications. Poor resistance to petroleum based fluids. It is a synthetic rubber copolymer of acrylonitrile and buta diene. One attraction to nbr is its stability in low temperatures with the ability to survive extreme cold of 30c 22f which epdm and silicone cant match. Animal and vegetable oils ozone strong and oxidizing chemicals.
It is incompatible with petroleum oil and gasoline but it is compatible with alcohols ethanol methanol and nitromethane water coolants both ethylene and propylene glycol and glycol based brake fluid. A lip sealing ring constitutes the seal between socket an spigot end. Epdm beats sbr in tensile strength and resistance to heat aging and weathering. Nbr is an unsaturated carbon rubber which is polymer made from acrylonitrile and butadiene. Nitrile butadiene rubber nbr stands alone as the most oil and fuel resistant elastomer. For each property being compared the top bar is epdm rubber and the bottom bar is sbr rubber.
Epdm has a lower compression set a higher tensile strength a better resistance to heat aging and high weathering resistance. Epdm is a synthetically produced ethylenepropylene rubber and an elastomer which is most widely used in both general purpose and special purpose applications. Nitrile butadiene 30 f 250 f. Ethylene propylene 40 f 300 f. Both epdm rubber and sbr rubber are thermoset elastomers rubber. The strength of nbr lies in its moderate costs and good resistance to swelling caused by hydrocarbons or acids.
Moreover epdm shows excellent environmental and chemical resistant properties. The acrylonitrile amount from low to high and oil resistant will enhance and cold resistance will decline during the producing. Excellent ozone chemical and aging resistance. Nitrile is king of elastomers when it comes to oil and fuel resistance. Nbr has a better oil resistant compared with epdm but epdm has a good wear resistance aging resistant and heat resisting. What is the difference between neoprene and epdm.
Mineral oils and solvents aromatic hydrocarbons. Two common synthetic rubber compounds are known as epdm and nitrile rubber. Properties with values for just one material 2 in this case are not shown. Nbr stands for nitrile butadiene rubber. Epdm is usually made into water pipe.
Gallery of Epdm And Nbr Difference
