... rubber o-rings 1.material: NBR,VITON,SILICON,NR ... 2,different size 3.samples for free Detailed Product Description Material: NBR, silicon ... vibration absorber.It could be made by many kinds of raw materials, such as NBR, SBR, Silicone, FPM5. Application: For ... sea/air freighthigh quality Hydraulic Rubber O-Ring leading with different colors, below the pictures for your reference: If you have ...