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Ethylene propylene rubber

Resistant to ozone and sunlight, oxidizing chemicals, non-flammable hydraulic fluids, pure aniline, fire extinguisher liquids, acids, hot water and steam. However, these rubbers are not resistant to mineral oils, petrol solvents and aromatic hydrocarbons. The allowable service temperature range is -40 °„C to +150 °„C. Hardness is typically in the range Shore A 40 to A 80.

Natural rubber

Soft and hard natural rubber are suitable for handling most inorganic chemicals, with the exception of strong oxidising agents such as chromic and nitric acids. Natural rubber are also suitable for handling hydrochloric acid. Natural rubbers are also resistant to most organic fluids, including alcohols and most esters. Natural rubber should not be used in the presence of aliphatic or aromatic hydrocarbons, halogenated hydrocarbons, mineral oils and certain vegetable oils. The allowable service temperature range is -40 °„C to +80 °„C.

Nitrile butadiene rubber

The acrylonitrile content must be at least 35% by mole to obtain good chemical resistance. Nitrile rubber are resistant to petroleum-based hydraulic and lubricating oils, animal and vegetable oils, acetylene, alcohols, water, alkalis and fuel oils. Nitrile rubber should not be used for phenols, ketones, acetic acids, most aromatic hydrocarbons and nitrogen derivatives. The allowable service temperature is -35 °„C to +80 °„C. Hardness is approximately Shore A 60.