... molding way to make it in the ring ship. It is generally used to seal the fluid liquid or gas, often works ... whole set of sealing parts. O-Ring is good at both in static seal and dynamic seal, main material contains: NR, CR, NBR ... produce o-rings (o-ring), waterproof circle, rubber ring, silicon gasket, sealing ring, sealing gaskets, WuGuJia oil-resistant rubber oil seal, such as the ...