• JIS O-Rings
Japanese Industrial Standard O-Rings are another popular classification system used around the globe. Published by the Japanese Standard Association, these o-rings are also categorized using the metric system. JIS O-Rings are used in many different fields, but typically are implemented in Japan's semiconductor, automotive and machine tool industries. Buna is also known as: Nitrile, NBR, N, Buna-N.

Nitrile, chemically, is a copolymer of butadiene and acrylonitrile. Acrylonitrile content is varied in commercial products from 18% to 48%. As the nitrile content increases, resistance to petroleum base oils and hydrocarbon fuels increases, but low temperature flexibility decreases.

Due to its excellent resistance to petroleum products, and its ability to be compounded for service over a temperature range of -65 to +275°F(-54 to +135°C), nitrile is the most widely used elastomer in the seal industry today.

Inherently nitrile does not possess good resistance to ozone, sunlight or weather, but this can be substantially improved through compounding. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
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O-Ring Industries

N/A
178681 		N/A JIS Standard O-Ring N/A Buna N/A 0.157 in4.00 mm N/A 70 N/A 54.50 mm2.146 in N/A 0.004 in0.13 mm N/A 0.01 in0.25 mm N/A V-55 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178682 		N/A JIS Standard O-Ring N/A Buna N/A 0.157 in4.00 mm N/A 90 N/A 54.50 mm2.146 in N/A 0.004 in0.13 mm N/A 0.01 in0.25 mm N/A V-55 N/A N/A O-rings are used in the military defense and agriculture industries.v
N/A
178683 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 70 N/A 579.00 mm22.795 in N/A 0.012 in0.22 mm N/A 0.063 in1.60 mm N/A V-585 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178684 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 90 N/A 579.00 mm22.795 in N/A 0.012 in0.22 mm N/A 0.063 in1.60 mm N/A V-585 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178685 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 70 N/A 633.5 mm24.941 in N/A 0.012 in0.22 mm N/A 0.063 in1.60 mm N/A V-640 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178686 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 90 N/A 633.5 mm24.941 in N/A 0.012 in0.22 mm N/A 0.063 in1.60 mm N/A V-640 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178687 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 70 N/A 683.00 mm26.890 in N/A 0.012 in0.22 mm N/A 0.063 in1.60 mm N/A V-690 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178688 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 90 N/A 683.00 mm26.890 in N/A 0.012 in0.22 mm N/A 0.063 in1.60 mm N/A V-690 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178689 		N/A JIS Standard O-Ring N/A Buna N/A 0.157 in4.00 mm N/A 70 N/A 69.00 mm2.717 in N/A 0.004 in0.13 mm N/A 0.01 in0.25 mm N/A V-70 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178690 		N/A JIS Standard O-Ring N/A Buna N/A 0.157 in4.00 mm N/A 90 N/A 69.00 mm2.717 in N/A 0.004 in0.13 mm N/A 0.01 in0.25 mm N/A V-70 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178691 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 70 N/A 732.50 mm28.839 in N/A 0.012 in0.22 mm N/A 0.079 in2.00 mm N/A V-740 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178692 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 90 N/A 732.50 mm28.839 in N/A 0.012 in0.22 mm N/A 0.079 in2.00 mm N/A V-740 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178693 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 70 N/A 782.00 mm30.787 in N/A 0.012 in0.22 mm N/A 0.079 in2.00 mm N/A V-790 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178694 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 90 N/A 782.00 mm30.787 in N/A 0.012 in0.22 mm N/A 0.079 in2.00 mm N/A V-790 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178695 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 70 N/A 836.50 mm32.933 in N/A 0.012 in0.22 mm N/A 0.079 in2.00 mm N/A V-845 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178696 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 90 N/A 836.50 mm32.933 in N/A 0.012 in0.22 mm N/A 0.079 in2.00 mm N/A V-845 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178697 		N/A JIS Standard O-Ring N/A Buna N/A 0.157 in4.00 mm N/A 70 N/A 84.00 mm3.307 in N/A 0.004 in0.13 mm N/A 0.016 in0.40 mm N/A V-85 N/A N/A O-rings are used in the military defense and agriculture industries.v
N/A
178698 		N/A JIS Standard O-Ring N/A Buna N/A 0.157 in4.00 mm N/A 90 N/A 84.00 mm3.307 in N/A 0.004 in0.13 mm N/A 0.016 in0.40 mm N/A V-85 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178699 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 70 N/A 940.50 mm37.028 in N/A 0.012 in0.22 mm N/A 0.098 in2.50 mm N/A V-950 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
178700 		N/A JIS Standard O-Ring N/A Buna N/A 0.394 in10.00 mm N/A 90 N/A 940.50 mm37.028 in N/A 0.012 in0.22 mm N/A 0.098 in2.50 mm N/A V-950 N/A N/A O-rings are used in the military defense and agriculture industries.
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