You use the black NBR X-ring from ERIKS as a seal for hydraulic oils and lubricating oils in linear or rotational systems. The characteristics of this X-ring make it the ideal replacement for an O-ring seal in slow, dynamic applications. This product offers standardised quality and is widely used in the hydraulics sector and general industry. For applications with temperatures above +120°C, the X-ring Compound 51414 is a better choice.


Application
Temperature resistance
This X-ring has an operating temperature range of -30°C to +120°C.

Maximum pressure
Compound 36624 has a Shore A hardness of 70. As a result, this O-ring is suitable for applications with a pressure of up to 80 bars. Refer to the chart below for information on the relationship between hardness, pressure, the groove dimensions and the seal clearance gap. You should always adhere to these guidelines.

At higher pressures (above 50 bars), we recommend using back-up rings in addition to an X-ring. Chemical resistance
Nitrile rubber is suitable for most applications that involve oils and greases. It is not resistant to ozone or UV radiation. Furthermore, it does not tolerate some organic oils or greases well, and should not be used for high-temperature applications. In such cases, an FFKM, FKM or HNBR O-ring is a better choice (depending on the application).

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