backup plate , shim block
In order to meet steady compression -resilience properties as cylinder gasket, the thickness tolerance of composite sheet and the density of flexible graphite plate should be control.
为了满足汽缸垫稳定的压缩、回弹性能要求，应注意复合板的厚度公差和柔性石墨面材最佳的密度范围的控制。
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