1.Material:NBR,SILICONE,VITON,HNBR,CR,PTFE,EPDM,etc.
2.Size:nationalstandard,Americanstandard,customstandard
3.Optionalcolor:black,red,yellow,brown,white,green,violetetc
4.Applicationin:Auto,motorcycle,machinery,waterpumps,valves,etc.
5.Certificate:ISO9001:2000,ISO9001:200...
Products: 65 exercise ball,
ball bearing hinge