Table 2. Tensile properties of NR, SR, and natural rubber/slide-ring composites.

Test	NR	SR	NR/SR (100/30)	NR/SR (100/40)	NR/SR (100/50)	NR/ENR/SR (90/10/40)	NR/ENR/SR (80/20/40)	NR/ENR/SR (70/30/40)
Tensile Modulus at 100% strain/MPa	0.71 ± 0.04	0.01 ± 0.002	0.43 ± 0.03	0.37 ± 0.04	0.34 ± 0.04	0.39 ± 0.03	0.41 ± 0.03	0.38 ± 0.03
Tensile Modulus at 300 strain/MPa	1.83 ± 0.12	0.04 ± 0.005	1.03 ± 0.09	0.84 ± 0.06	0.84 ± 0.07	0.96 ± 0.05	1.00 ± 0.05	0.95 ± 0.07
Tensile strength /MPa	21.6 ± 0.62	0.045 ± 0.007	15.4 ± 0.41	12.5 ± 0.39	12.1 ± 0.36	13.2 ± 0.37	13.3 ± 0.33	12.9 ± 0.35
Elongation at break/%	711 ± 5.38	352 ± 3.88	776 ± 5.34	784 ± 5.61	794 ± 5.53	782 ± 5.23	788 ± 5.46	773 ± 5.44
Hardness	42 ± 0.56	15 ± 0.34	30 ± 0.67	28 ± 0.55	25 ± 0.37	29 ± 0.48	30 ± 0.39	31 ± 0.40