O-rings, o ring cord, rubber rope,backups, quad rings, square rings, o-cord, square cord,,etc. for NBR, VITON, SILICON,,,,ETC ... Viton O-RING CORD, viton RUBBER ROPE,viton rubbe ... FKM) shore 75 , and the colors as your requiredTensile strength at break:>12MpaElongation at break:>120%.Hardness change: -5ATemperature Resistance ...