敬告广大密封件用户朋友：

德国德氏封密封推出标准NBR90材质挡圈，与O形圈配合使用最高允许压力达20MPa，允许温度范围-30℃至+100℃。

Operational application limits
Pressure (MPa): max. 20
the max. permissible operating pressure depends on the gap dimensions.
Temperature (°C): -30 to + 100
The operational application limits use are dictated by the O-ring selected. It is only the resistance of the sealing system to pressure which can be increased by the STU back-up ring.

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