nsf51, nsf61 & ul o-rings
Additional requirements have been imposed upon seal manufacturers regarding food, beverage and potable water service. NSF 51, Food and Beverage, and NSF 61, Potable Water, deal with indirect additives that may arise by migration into food, beverage and potable water from rubber, plastic, metal or other materials. Parker Seal has developed a number of compounds, which meet NSF 51 and NSF 61 requirements.
Common Parker compounds are listed by Underwriters’ Laboratories (UL) under their “Recognized Compound Program.” The listing is based on UL testing of compound for specific service requirements as shown in Table.
Click Here to see the table