What is NSF Standard 61?
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 health effects standard
for all devices, components and materials which contact drinking
FDA Approved Orings
SPEC SEALS has formulated
a wide range of Oring materials to meet the Food & Drug
Administration's (FDA) requirements for synthetic rubber compounds.
All SPEC SEALS' FDA compounds conform to the Code of Federal
Regulations section 177.2600. Most of the compounds listed
below can be manufactured in different durometers, while still
meeting the FDA regulations.
This standard is formulated by "The
International Association of Milk, Food and Environmental
Sanitarians, U.S. Public Health Service, The Dairy Industry
Committee". These sanitary standards cover rubber
materials intended for multiple-use as product contact surfaces
or solution contact surfaces in the production, processing
and handling of milk or milk products. Test
procedures and criteria are also provided for rubber materials
as a means of determining their ability to be cleaned and
to receive effective bactericidal treatment or steam sterilization
and to maintain their essential properties.
Water Regulations Advisory Scheme (WRAS) 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 Standards for product use with Water Fittings
WRAS Approved for use in British and UK water fittings
-65 to +300F
KTW Approved Orings
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.