Natural rubber hand wheel resistance to the performance of natural rubber hand wheel is a non-polar material, it is soluble in non-polar solvent and non-polar oil. Natural rubber hand wheel is not resistant to cyclohexane, gasoline, benzene and other media, unvulcanized rubber can be dissolved in the medium, vulcanized rubber hand wheel is swollen. Natural rubber handwheel insoluble in polar acetone, ethanol, more insoluble in water, resistant to 10% hydrofluoric acid, 20% hydrochloric acid, 30% sulfuric acid, 50% sodium hydroxide and so on. hybrid encoder, non-magnetic encoder, multi-turn encoder, multi-turn combination encoder, draw wire encoder, digital readout, linear scale
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