NSF 51 Compounds

NSF/ANSI 51 — Food Equipment Certification

NSF is the most accepted and trusted certification in commercial foodservice equipment, specified by health departments, restaurant buyers, and specifiers. NSF means market access—products with the NSF mark receive guaranteed regulatory acceptance in North America and improved acceptance worldwide.

This standard is applicable to the materials and finishes used in the manufacturing of food equipment (e.g., broiler, beverage dispenser, cutting board, stock pot, etc.). The standard is also applicable to components such as tubing, sealants, gaskets, valves, and other items intended for various food equipment applications. These components shall meet the relevant design and construction requirements of the NSF standard applicable to the type of food equipment on which the component is used.

In addition to NSF 51, these materials are also FDA and 3-A Sanitary listed and comply with 21CFR 177-2600, “Rubber Articles Intended for Repeated Use” (with food).

NSF 51 Compounds

  • EPDM: E-70
  • NBR: N-70
  • Viton™: F-70
  • Silicone: S-70 Food/Beverage

NCS also offers two compounds that are EPDM 70 durometer and are both NSF 51 and 61 certified, as well as EN 681-1, DVGW W534, KIWA, CLP, WRAS, UBA, DVGW-W270 E, and in compliance with FDA (177.2600-21).

APPROVED FOOD CONTACT TYPES

  • Alcohol Less than 8% (AL<8)
  • Alcohol Greater Than 8%(AL>8)
  • Aqueous Acidic (AQ-AC)
  • Aqueous Non-Acidic (AQ-NAC)
  • Bakery Products with Free Fats and Oils on Surface (B-O)
  • Bakery Products with No Free Fats or Oils on Surface (B-O)
  • Dairy, Oil in Water Emulsions (DY-OW)
  • Dairy, Water in Oil Emulsions (DY-WO)
  • Dry Solids (DS)
  • Oils and Fats (Oil-Fat)

Viton™ is a trademark of The Chemours Company FC, LLC.

Made With Viton seal  3A logo

FAQs About NSF 51 Compounds

NSF/ANSI 51 is the certification standard for materials used in commercial food equipment. It applies to the materials and finishes in products like broilers, beverage dispensers, and cutting boards, as well as components such as tubing, gaskets, and valves. NSF certification is specified by health departments, restaurant buyers, and equipment specifiers across North America.

Any material or component that comes into contact with food during commercial equipment use may require NSF 51 certification. That includes food equipment (broilers, beverage dispensers, cutting boards, stock pots) and the components inside them (tubing, sealants, gaskets, valves). The specific requirement depends on the type of food equipment and the food contact application.

North Coast Seal supplies four NSF 51 certified elastomer compounds: EPDM (E-70), NBR (N-70), Viton™ (F-70), and Silicone (S-70 Food/Beverage). We also offer two EPDM 70 durometer compounds certified to both NSF 51 and NSF 61, along with several international drinking water standards.

NSF 51 certifies materials for use in commercial food equipment. NSF 61 certifies materials for use in drinking water system components. A material can hold either certification alone or both. See our NSF 61 compounds page for potable water certified materials, or our dual certification page for compounds that meet both standards.

Yes. In addition to NSF 51 certification, our compounds are FDA listed, 3-A Sanitary listed, and comply with 21 CFR 177.2600, "Rubber Articles Intended for Repeated Use" with food. These parallel certifications support broader regulatory acceptance across food, beverage, and dairy processing applications.

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