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Aras Nour Lubricants co
Aras Nour Lubricants co is a provider of industrial lubricants from reputable and prominent foreign brands such as Rocol, Sentinel, Beta, Apiezon, Solvay Solexis, Eralube, Molyduval, Renite, Oelheld, that used in all industries. Be The company, enjoying the experience and technical knowledge, with the goal of customer orientation and providing the most honest and professional services of the specialist and expert, free consultation and presentation of original products, has won the trust of the respectable owners of the industries and in line with the goals of all industries, participation Activate
The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water.
The viscosity index (VI) is an arbitrary, unitless measure of the change of viscosity with temperature, mostly used to characterize the viscosity-temperature behavior of lubricating oils. The lower the VI, the more the viscosity is affected by changes in temperature.
The pour point of a liquid is the temperature below which the liquid loses its flow characteristics.
The flash point of a volatile material is the lowest temperature at which vapors of the material will ignite, when given an ignition source.
The flash point is sometimes confused with the autoignition temperature, the temperature that results in spontaneous autoignition. The fire point is the lowest temperature at which vapors of the material will keep burning after the ignition source is removed.
The fire point of a fuel is the lowest temperature at which the vapor of that fuel will continue to burn for at least 5 seconds after ignition by an open flame. At the flash point, a lower temperature, a substance will ignite briefly, but vapor might not be produced at a rate to sustain the fire. Most tables of material properties will only list material flash points. Although in general the fire points can be assumed to be about 10 °C higher than the flash points.
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The density of the oils varies with each type and temperature. The range is from 0.91 to 0.93 g/cm3 between the temperatures of 15 °C and 25 °C.
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