High Quality Customizd Colorful FKM HNBR Silicone Rubber Oring O-Ring Seal Ring Hydraulic O Ring. Customizable Sizes and Colors: Available in custom sizes, shapes, and colors based on RAL or Pantone codes. Wide Material Selection: Options include NBR, FKM, Silicone, EPDM, Neoprene, and custom blends. High Temperature Resistance: Operational range from -20 to +220 degrees Celsius for extreme conditions. ISO 9001 Certified Quality: Manufactured under ISO9001:2015 and ISO45001:2018 certified management systems. Free Samples Available: Free samples provided with a 15-day lead time for evaluation. Comprehensive Customization: Support for OEM/ODM, logo printing, and full design customization. Fast Production Lead Time: Standard lead time of 15 days, with peak season within one month. Versatile Application Range: Suitable for automotive, aerospace, plumbing, and industrial machinery.