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Seals for the Food & Beverage Industry

NSF 51 O-ring & Seal Materials:

The National Sanitation Foundation (NSF International), not to be confused with FDA or 3A, developments public health standards and certification programs that help protect the world’s food, water, consumer products and environment.The requirements are based on U.S. FDA regulations.

NSF 51 (also referred to as NSF/ANSI Standard 51) establishes minimum public health and sanitation requirements for materials used in the construction of commercial food equipment.

NSF 51 Ethylene Propylene (EPDM) Compounds:

Brand Compound Number Datasheet Hardness (Shore A) Low Temp High Temp Color
Parker E3609-70 PDF 70 +- 5 -- -- Black
Parker E1583-70 PDF 70 +- 5 -- -- Black
Freudenberg 70 EPDM 291 PDF 70 +- 5 -40 302 Black
Freudenberg 85 EPDM 292 PDF 85 +- 5 -40 302 Black

NSF 51 Flourocarbon (FKM) Compounds:

Brand Compound Number Datasheet Hardness (Shore A) Low Temp High Temp Color
Parker V0680-70 PDF 70 +- 5 -- -- Red

NSF 51 Nitrile (NBR) Compounds:

Brand Compound Number Datasheet Hardness (Shore A) Low Temp High Temp Color
Parker N112-70 70 +- 5 -- -- Black