Product Name O Ring Material Silicone,Inside Diameter 3mm/ 0.12" Outside Diameter 8mm/ 0.31",Thickness 2.5mm/ 0.1" Color Brick Red,Weight: 16g,Package Content: 100 Pcs(±2%) x O Ring,Flexible brick red silicone O ring seal. It is an ideal solution for sealing application where there are high temperatures and corrosive liquids or gases involved. Used widely for mechanical sealing, pressure vessel, gas compressor, reaction vessel, heat exchanger, boiler, filter, automobile, electrical appliance, and other fields. Other