high quality rubber o-rings 1.material: NBR,VITON,SILICON,NR ... 2,different size 3.samples for free Detailed ... Product Description Material: NBR, silicon rubber, fluorin rubber, PTFE.Working temperature: -35-+250Working pressure: ≤ ... strap, type, controlling equipment and vibration absorber.It could be made by many kinds of raw materials, such as NBR, SBR, Silicone ...