Table 1. The Recipe of Rubber Compounds

	Silicon rubber	Butyl rubber	Nitrile rubber
Base rubber	100.0	100.0	100.0
Carbon black	5.0	5.0	5.0
Stearic acid	1.0	1.0	1.0
ZnO	3.0	3.0	3.0
Process oil	1.0	1.0	1.0
Dicumyl peroxide	1.0	-	-
Sulfur	-	2.0	1.5
Total	110.0	111.0	111.5