Buna-N is a type of synthetic rubber and an FDA-approved compound, which is widely used for making O-rings, gaskets, seals, and custom molded components for food and pharmaceutical processing industries. At SSP Seals, we specialize in the design and manufacturing of white Buna O-rings for food service and pharmaceutical processing applications. We can provide them in different levels of hardness and durometer.
Buna-N, also known as NBR rubber or nitrile rubber, is one of the widely used industrial elastomers, which is known for its chemical and oil resistance properties. The nitrile rubber is a copolymer of butadiene and acrylonitrile (ACN). The physical and chemical properties of this elastomer may differ based on its composition. White Buna-N (Nitrile Rubber) is a non-allergenic and non-toxic elastomer, which makes it an ideal choice for building O-rings for repeated food exposure.
Thermal, Chemical, and Mechanical Properties of White FDA Approved BUNA-N (Nitrile Rubber)
The following properties of nitrile rubber have contributed to its immense popularity across food, pharmaceutical, and other industries.
White FDA BUNA-N Datasheet
|Properties||ASTM Designation||Test Method||Unit of Measure||ASTM D2000 Specification||WN70 Metric Compound Property|
|Original Properties||Durometer||-||D2240-10||Shore A||70± 5||72|
|Tensile Strength||-||D412-13||MPa||10 Min||11.6|
|Modulus at 100%||Z1||D412-13||MPa||Report||3.8|
|Heat Age||Durometer Change||ASTM D573-10 70 Hours @100° C||Shore A||±15||+5|
|Tensile Strength Change||%||-20||-5|
|Elongation Resistance Change||%||-40||-15|
|Compression Set||Original Deflection||B14||ASTM D395-08 22 Hours @ 100°C||%||50 Max||20|
|IRM901 Oil Resistance||Durometer Change||EO14||STM D471-12A 70 Hours @100°C||Shore A||-5 to +15||+5|
|Tensile Strength Change||%||-25||+5|
|Elongation Resistance Change||%||-45||-5|
|Change in Volume||%||-10 to +5||-6|
|IRM903 OIL RESISTANCE||Durometer Change||E034||ASTM D471-12A 70 Hours @100°C||Shore A||0 to -20||+6|
|Tensile Strength Change||%||-5||-5|
|Elongation Resistance Change||%||-26||-26|
|Change in Volume||%||0 to +35||+15|
Feel free to contact our team today to discuss your requirements for nitrile rubber O-rings. We can customize the FDA white buna O-rings to any specifications as per your requirement. Our experts are always ready to help you make the right selection.