Table 1. Physical Characteristics of Rubber Specimens Used in the Test

		Sample1	Sample2	Sample3	Sample4	Sample5	Sample6
Hardness		70	70	71	72	69	62
Tension Properties	10% Mod.	7.6	7.9	7.8	8.4	7.6	5.3
	100% Mod.	20	24	25	22	23	16
	300% Mod.	86	103	108	87	97	72
	Elongation	606	568	499	595	528	617
Viscoelastic Properties	0°C G"	1.0E+07	9.3E+06	3.7E+06	5.1E+06	3.8E+06	3.5E+06
	0°C tanδ	0.341	0.386	0.200	0.197	0.199	0.234
	0°C tanδ	0.131	0.122	0.106	0.129	0.110	0.147