... material: NBR,VITON,SILICON,NR ... 2,different size 3.samples for free Detailed Product Description Material: NBR, silicon rubber, fluorin rubber ... raw materials, such as NBR, SBR, Silicone, FPM5. Application: For industry machines seal, water seal, oil seal and gas seal6. Unit price ... Rubber O-Ring leading with different colors, below the pictures for your reference: If you have interest in our rubber ...