Micro seals has formulated a wide range ofFood grade O-RingsĀ materials to meet the Food & Drug Administration's (FDA) requirements for synthetic rubber compounds. Our Food Grade O-Rings are non-toxic, odour free and no harmful ingredients to human beings, same luster and no pollutions Used in foods, pharma and medical industries.It is a Good resistance to oily, greasy and abrasion for food products. Food, pharma and medical grade products are available in a NBR, EPDM, Viton and Silicone materials.