O-rings HNBR

Hydrogenated Nitrile (HNBR) is obtained by hydrogenating the double bonds in NBR rubber with hydrogen to single bonds. In comparison with NBR O-rings, HNBR O-rings have better oil resistance, temperature resistance, ozone resistance and strength. It is more resistant to ozone and aggressive media and can be used from -40 °C to +150 °C (with peaks up to +190 °C).

HNBR O-rings are typically used with mineral-based oils and fuels, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, water and steam (up to 150ºC), and diluted acids, bases, and salt solutions. HNBR O-rings are not recommended to use with chlorinated hydrocarbons, ketones, ethers, esters, and strong acids.

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