FDA White Buna

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.

• The nitrile rubber can resist vegetable oils, silicone greases, petroleum-based oils, alkalines, diluted acids, water, and hydraulic fluids.
• It assures high tensile strength and abrasion resistance.
• This nitrile rubber can withstand a wide range of temperatures from −40° to 121°C.
• It has a tensile strength of ≥10 N/mm2.
• The elongation of nitrile rubber at break is 450%.
• White nitrile rubber is a common choice for applications where appearance can be a concern.
• The white finish of these FDA Buna-N O-rings makes them desirable for different applications in the medical industry.
• White-colored finish of these rings can easily highlight leaks, which makes them superior over dark materials.
• Owing to its aforementioned properties, nitrile rubber is also used for protection and cushioning in food-grade applications.   

SSP Manufacturing, Inc.

Phone: 1-908-852-3125     Email: gm@sspseals.com

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
	Elongation Resistance	-	D412-13	%	250	250
	Specific Gravity	-	D297-13	-	Report	1.31
	Modulus at 100%	Z1	D412-13	MPa	Report	3.8
	Cure System	Z2	-	-	-	Sulfur
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.