... . 3.Most competitive price. 4.Small quantity accept Details about rubber seals for glass bottle : Materials Comply with ROHS, NBR, Silicone (VMQ), EPDM, Viton ... A or as your request.Tolerance Strictly upon international standard, no flash.Color Black, transparent, green, red, yellow, grey, purple, pink ... projects with high efficiency. 5. Small order quantity is welcomed. Rubber seals for glass bottle