... .material: NBR,VITON,SILICON,NR ... 2,different size 3.samples for free Detailed Product Description Material: NBR, silicon rubber, fluorin rubber ... .4.O-rings could not only be used for its good sealing performance, but also for its mechanical performances, it is being used ... of raw materials, such as NBR, SBR, Silicone, FPM5. Application: For industry machines seal, water seal, oil seal and gas seal6 ...