... aging resistance. 2,good tensility and elasticity. 3,economic. Rubber wheel: Name Rubber wheel MaterialNR,SILICONE,EPDM,SBR,NBR,CR,BR,IIR etc SizeAs ... anti-sealing 2.Superior aging-resistance 3.Good shock-absorption 4.Different colors The major marketWestern Europe ,Southeast Asia PackingPlastic bag ... :The process of prodcution to shipment: Welcome to your inquiry! Rubber wheel