Differences between EPDM and NBR
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This post was last edited by wqltj12 on 2017-12-21 22:02. As the title suggests, which of these two types offers better sealing for butterfly valves? The medium is a liquid containing diesel (in small amounts), is alkaline, and has a high sand content. Below 120°. Additionally, I would like to ask that if nitrile rubber is used for sealing, what appropriate level of acrylonitrile content is suitable for the aforementioned media? Thank you all for your valuable advice!
EPDM is not resistant to oil. The alkali resistance of nitrile rubber depends on the concentration, and its high-temperature resistance is poor.
Nitrile rubber is selected based on the properties of the medium; generally, the ACN content should be above 30%