Silicone Sundry,Seal Ring: 1,accept custom design 2,exiting mould for O-ring 3,different colours,style 4,Eco-friendly China Expert Supplier, Manufacturer, Of Silicone Products .Silicone Sundries including :1, Rubber Tubing 2, Silicone O-ring3, Mechanical gasket4, Connector.....Besides, custom design are highly welcomed .Products color including :1, solid color2, mix color 3, transparent4, ...