... SOR-M0005MaterialNBR, HNBR, NBQ, FKM, CR, PDFE, EPDM, SILICONE. ect.ColorAvailable in any color, according to customers’ requirementsWorking Temperature ... packing) or customizedCertification dataISO9001(“SGS” of the year 2000 edition), FDA, LFGB, ROHSProduct Details:1) Any shape & color is available.2 ... . Certificate We Owned: Capacity of our company: Colored Silicone O Ring With High Quality Approval