All Boyd Corporation O-rings are built to the highest national and international safety standards. Our rigorous adherence to these industry and governmental standards ensures the highest-quality O-rings and custom-molded seals delivered to distributors and manufacturers.
Boyd Corporation has recently developed two unique compounds specially-formulated for potable water applications requiring NSF standard 61 approval.
Contact Us NSF Standard 61 Approved Orings
The NSF Water Distribution Systems Program is responsible for the certification of drinking water treatment chemicals and drinking water system components to ensure that these products do not contribute contaminants to drinking water that could cause adverse health effects.
NSF Standard 61 Drinking Water System Components – Health Effects is the nationally recognized standard for all devices, components and materials which contact drinking water.
| Compound | Description | Temp Range | Durometer | Color | FDA |
| N161-70 | A general purpose, sulfur-cured NSF Standard 61 Approved Nitrile
(Buna-N) compound | -40 to +250F | 70 | Black | Yes |
| E362-70 | NSF Standard 61 Approved peroxide cured EPDM | -65 to +300F | 70 | Black | Yes |
Boyd Corporation has formulated a wide range of O-Ring materials to exceed the Food & Drug Administration’s (FDA) requirements for synthetic rubber compounds. All of our FDA compounds used in FDA approved O-Rings or as a FDA seal conform to the Code of Federal Regulations section 177.2600.
| Compound | Description | Temp Range | Duro | Color |
| N168-70 | FDA Grade Nitrile (Buna-N) | -40 to +250F | 70 | Black |
| E300-70 | FDA Grade EPDM | -65 to +300F | 70 | Black |
| S500-70 | FDA Grade Silicone | -80 to +400F | 70 | Black |
| V760-75 | FDA Grade Silicone | -20 to +400F | 75 | Black |
| V768-75 | Dupont-Dow Viton®, FDA Grade | -20 to +400F | 75 | Brown |
| C268-70 | FDA Grade Neoprene | -40 to +225F | 70 | Black |
| N188-70 | FDA Grade, UltraSlip® Nitrile | -40 to +250F | 70 | Black |
| E388-70 | FDA Grade, UltraSlip® EPDM | -65 to +300F | 70 | Black |
3A Sanitary Approved Orings
3A Sanitary standards regulate rubber materials used in the production, processing and handling of milk and milk products and is formulated by the International Association of Milk, Food and Environmental Sanitarians, U.S. Public Health Service, and the Dairy Industry Committee. There are also criteria and testing procedures intended to determine a rubber materials ability to be cleaned and receive effective bactericidal treatment or steam sterilization while maintaining their essential properties.
| Compound | Description | Temp Range | Duro | Color |
| V768-75 | DuPont Viton®, FDA Grade, 3A Sanitary Standard Approved | -20 to +400F | 75 | Brown |
| S568-70 | FDA Grade Silicone, 3A Sanitary Approved | -80 to +400F | 70 | Red |
| N168-70/M | FDA Grade, UltraSlip® Nitrile (Buna-N) | -40 to +250F | 70 | Black |
| E368-70/M | FDA Grade EPDM, 3A Sanitary Approved | 65 to +300F | 70 | Black |
Water Regulations Advisory Scheme (WRAS Standard) is responsible for the water fitting testing and approval process in the United Kingdom. This organization specifies performance criteria and test procedures designed to verify compliance to British WRAS standard for product use with water fittings.
| Compound | Description | Temp Range | Duro | Color |
| E363-70 | WRAS Approved for use in British and UK water fittings | -65 to +300F | 70 | Black |
KTW Guidelines are formulated by the German Technical Association for Gas and Water. These standards cover guidelines for organic materials that come into contact with drinking water intended for human consumption. Test procedures and migration criteria are provided in the KTW guidelines as a means of determining whether a material meets threshold heath, odor and flavor requirements.
| Compound | Description | Temp Range | Duro | Color |
| N163-70 | KTW Approved for European Drinking Water Systems | -40 to +250F | 70 | Black |
