... ,VITON,SILICON,NR ... 2,different size 3.samples for free Detailed Product Description Material: NBR, silicon rubber ... seals.2.The structure of sealing part is very simple,for this reason,it could be used ... such as NBR, SBR, Silicone, FPM5. Application: For industry machines seal, water seal, oil seal and gas ... leading with different colors, below the pictures for your reference: If you have interest in ...