Flexible graphite metal wound gasket m, y values

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As can be seen from the characteristic parameters of common gaskets in Table 7-2 of GB/T150.3-2011, the gasket coefficient and specific pressure are related to the gasket material. But are they only related to the gasket material, or is there any relationship with the gasket dimensions as well? I need to conduct a compression-rebound test on gaskets, but since these gaskets are large in size, hydraulic equipment is required to generate sufficient pressure. However, hydraulic equipment can only record the displacement-stress data of the gasket during the compression phase; it is unable to record data during the rebound phase. On the other hand, microcomputer control systems with a lower pressure range can record test data for both phases, but this requires reducing the size of the gaskets in order to decrease the maximum compression load. I wonder whether the performance of the gaskets (their compression-rebound curves) is related to their size.