Table 1. Short-term accelerated aging study (70° C for 70 h) of the Compression Set of the rubber materials constituting the two types of foams.

Material	Specimen #	Original Thickness(mm)	CompressiveStrain (%)	Final Thickness(mm)	CompressionSet (%)
Rubber used forAM FCT foam	1	12.97	26.7	12.76	6.1
	2	12.98	26.8	12.78	5.9
	3	12.97	26.7	12.76	5.9
	4	12.95	26.6	12.74	6.0
	Avg ± SD				6.0 ± 0.1
Rubber used forstochastic foam	1	12.64	24.8	12.58	2.0
	2	12.68	25.0	12.59	2.8
	3	12.64	24.8	12.60	1.2
	4	12.68	25.0	12.63	1.5
	Avg ± SD				1.9 ± 0.7