Standard or Nonstandard:Nonstandard Style:O Ring Material:Silicone Item Name:high quality elasticity 0.5mm thickness silicone O RING Material:100% Silicone or rubber Features:eco-friendly, non-toxic Usage:Medical accessories Color:Transparent Size:Custom size is welcome Certification:ROHSFDALFGBULREACH Packing:Opp bag or according to your request Logo:Debossed/embossed/priniting is weclome Sample:Available Show More