Since establishment in 1991 in Incheon, KOREA, SUNIL has been supplying high-quality rubber sealing parts to various industries in the world.   We specialize in the development and production of standard and custom size o-rings in various rubber materials, sizes, and colors.  SUNIL manufactures  STANDARD (AS568A and JIS B2401) and CUSTOM size o-rings in NBR, EPDM, Silicone, FKM, CR, HNBR, AFLAS, and so on..  Whether the custom order volume is large or small, we pay utmost attention to the details and closely cooperate with customers to guarantee the shortest lead time to development and on-time shipment of quality o-rings.