Differences between NR and NBR of Rubber Expansion Joint
NR and NBR are the common rubber material used in double ball rubber expansion joints producing.
However, they are of different features and are of different functions. Differences between NR and NBR
are as follows:
Natural rubber (NR) mainly contains rubber hydrocarbon with a small amount of protein, water, resin
acids, carbohydrates and inorganic salts, etc.. The advantages of NR are large flexibility, high elastic
modulus and tear resistance and excellent electrical insulation, good abrasion resistance and drought
tolerance, good adhesion,it is better than most synthetic rubber in in comprehensive performance.
NBR is the copolymer of butadiene and propylene fine. It’s particularly great in resistant to gasoline and
fat hydrocarbon oils, just a little bit worse compared with sulfur rubber, acrylic and fluorine rubber, but
better than other general rubber. Good heat resistance, air tightness, wear resistance and water
resistance, strong adhesion etc.
NR and NBR are made by different chemical material and are of different functions, customers should be
noted about the differences between them.
Differences between NR and NBR of Rubber Expansion Joint
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