Buna-N O-Rings 70 Durometer FDA - Black
Black FDA Buna-N 70 O-Rings - Food Grade for the Food Processing Industry
These Buna-N rubber O-rings comply with Paragraph 177.2600 of Title 21, sub-paragraphs a) through d), Code of Federal Regulations, "Rubber Articles Intended for Repeated Use". It should be noted that the Food and Drug Administration does not actually approve any rubber compounds. Rather it publishes a list of permissible ingredients and the maximum allowable concentration of each. FDA (Food Grade) rubber products are commonly used in applications where food or consumables are present, such as in the food processing, beverage, dairy, meat packing, and pharmaceutical industries. FDA rubber products are also found within most food packaging equipment, such as gable-top packaging machinery.
Buna-N O-Rings / Nitrile O-Rings / NBR: Buna-N O-Rings are the most widely used o-ring material in the world because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems, propane, natural gas and the default choice for basic applications. Buna-N o-rings are not recommended for exposure to sunlight, UV light, ozone and general outdoor weathering or hash chemicals, acids, keytones and many others.
Applications: General purpose sealing, Air Tools, Petroleum based oils, fuels, L.P. gases, Cold Water, Silicone greases and oils, Di-ester base lubricants (MIL-L-7808), Ethylene glycol base fluids (Hydrolubes) and Hydraulic Fluidsand in static and dynamic applications.
Avoid: Brake fluids, ozone and UV light
Operating temperature: -40° to +250F°
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