Precautions to choose a high quality PU hose
EPDM hose is a rubber product often used in our lives. It is commonly used in engineering machinery, electronic machinery, automobiles, engines and other environments. Commonly used to transport water, air, warm air, antifreeze and other substances. So the question is, can EPDM rubber hoses transport oil substances?
First, let’s look at the composition of EPDM
EPDM rubber is a polymeric substance polymerized with propylene, ethylene and a very small amount of non-conjugated diene. From the perspective of its molecular chain, EPDM’s main chain is composed of stable saturated hydrocarbons. But its side chain contains some saturated carbon-carbon double bonds. This makes the EPDM rubber hose highly resistant to conditions such as heat, ultraviolet rays, and ozone. These characteristics have little impact on the oil resistance of watering.
Then look at the polarity of the material
The memory of rubber is judged by whether the rubber contains polar groups. Our common non-polar rubbers include natural rubber, EPDM, SBR, etc. According to the principle of similar compatibility, non-polar materials and non-polar materials are compatible with each other. Oils such as gasoline, diesel, and kerosene are non-polar materials, so EPDM hoses are compatible with these oils. In other words, EPDM rubber hoses can not transport oily materials well.
Therefore, to sum up, EPDM rubber hose is not oil-resistant. If you want to choose a rubber hose with oil resistance, we can choose nitrile rubber hose. The biggest feature of this hose is that it has excellent oil resistance. property, under normal circumstances it can well meet our needs for oil resistance of hoses.
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