Rubber sealing ring: Rubber sealing,good quality competitive price Black molded rubber washer : Name Black molded rubber washer MaterialNR,SILICONE,EPDM,SBR,NBR,CR,BR,IIR etc ... ColorAll colors are available Hardness30-80shore A ApplicationMainly used in sealing and shockproof Unit priceDepand on the details of drawing or ... want to more information,please feel free to contact me! Rubber sealing ring