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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.
JIS O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

ID Tolerance

JIS Number

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O-Ring Industries

Quantity
P105 B-70 N/A
178281 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 104.60 mm4.118 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-105 N/A N/A O-rings are used in the military defense and agriculture industries.
P105 B-90 N/A
178282 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 90 N/A 104.60 mm4.118 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-105 N/A N/A O-rings are used in the military defense and agriculture industries.
P10A B-70 N/A
178283 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 70 N/A 9.80 mm0.386 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-10A N/A N/A O-rings are used in the military defense and agriculture industries.
P10A B-90 N/A
178284 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 90 N/A 9.80 mm0.386 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-10A N/A N/A O-rings are used in the military defense and agriculture industries.v
P11 B-70 N/A
178285 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 70 N/A 10.80 mm0.425 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-11 N/A N/A O-rings are used in the military defense and agriculture industries.
P11 B-90 N/A
178286 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 90 N/A 10.80 mm0.425 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-11 N/A N/A O-rings are used in the military defense and agriculture industries.
P11.2 B-70 N/A
178287 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 70 N/A 11.00 mm0.433 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-11.2 N/A N/A O-rings are used in the military defense and agriculture industries.
P11.2 B-90 N/A
178288 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 90 N/A 11.00 mm0.433 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-11.2 N/A N/A O-rings are used in the military defense and agriculture industries.
P110 B-70 N/A
178289 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 109.60 mm4.315 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-110 N/A N/A O-rings are used in the military defense and agriculture industries.
P110 B-90 N/A
178290 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 90 N/A 109.60 mm4.315 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-110 N/A N/A O-rings are used in the military defense and agriculture industries.
P112 B-70 N/A
178291 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 111.60 mm4.394 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-112 N/A N/A O-rings are used in the military defense and agriculture industries.
P112 B-90 N/A
178292 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 90 N/A 111.60 mm4.394 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-112 N/A N/A O-rings are used in the military defense and agriculture industries.
P115 B-70 N/A
178293 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 114.60 mm4.512 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-115 N/A N/A O-rings are used in the military defense and agriculture industries.
P115 B-90 N/A
178294 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 90 N/A 114.60 mm4.512 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-115 N/A N/A O-rings are used in the military defense and agriculture industries.
P12 B-70 N/A
178295 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 70 N/A 11.80 mm0.465 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-12 N/A N/A O-rings are used in the military defense and agriculture industries.
P12 B-90 N/A
178296 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 90 N/A 11.80 mm0.465 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-12 N/A N/A O-rings are used in the military defense and agriculture industries.v
P12.5 B-70 N/A
178297 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 70 N/A 12.30 mm0.484 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-12.5 N/A N/A O-rings are used in the military defense and agriculture industries.
P12.5 B-90 N/A
178298 		N/A JIS Standard O-Ring N/A Buna N/A 0.094 in2.40 mm N/A 90 N/A 12.30 mm0.484 in N/A 0.003 in0.09 mm N/A 0.005 in0.12 mm N/A P-12.5 N/A N/A O-rings are used in the military defense and agriculture industries.
P120 B-70 N/A
178299 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 119.60 mm4.709 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-120 N/A N/A O-rings are used in the military defense and agriculture industries.
P120 B-90 N/A
178300 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 90 N/A 119.60 mm4.709 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-120 N/A N/A O-rings are used in the military defense and agriculture industries.
P125 B-70 N/A
178301 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 124.60 mm4.906 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-125 N/A N/A O-rings are used in the military defense and agriculture industries.
P125 B-90 N/A
178302 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 90 N/A 124.60 mm4.906 in N/A 0.006 in0.15 mm N/A 0.016 in0.40 mm N/A P-125 N/A N/A O-rings are used in the military defense and agriculture industries.
P130 B-70 N/A
178303 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 129.60 mm5.102 in N/A 0.006 in0.15 mm N/A 0.024 in0.60 mm N/A P-130 N/A N/A O-rings are used in the military defense and agriculture industries.
P130 B-90 N/A
178304 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 90 N/A 129.60 mm5.102 in N/A 0.006 in0.15 mm N/A 0.024 in0.60 mm N/A P-130 N/A N/A O-rings are used in the military defense and agriculture industries.
P132 B-70 N/A
178305 		N/A JIS Standard O-Ring N/A Buna N/A 0.224 in5.70 mm N/A 70 N/A 131.6 mm5.181 in N/A 0.006 in0.15 mm N/A 0.024 in0.60 mm N/A P-132 N/A N/A O-rings are used in the military defense and agriculture industries.
Unit of Measure
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