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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.

This elastomer possesses mechanical properties similar to Viton®, with the exception of its slightly lower compression set resistance. It is more suitable for sensitive applications where lighter compressive forces are applied to energize the seal. This core has a Shore A hardness of 70 but it also offers a broader operating temperature range of -80°F to +500°F. (-62°C to +260°C). 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
S12 S-70 N/A
180436 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 11.50 mm0.453 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-12 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S12.5 S-70 N/A
180437 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 12.00 mm0.472 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-12.5 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S120 S-70 N/A
180438 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 119.50 mm4.705 in N/A 0.004 in0.09 mm N/A 0.016 in0.40 mm N/A S-120 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S125 S-70 N/A
180439 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 124.50 mm4.902 in N/A 0.004 in0.09 mm N/A 0.016 in0.40 mm N/A S-125 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S130 S-70 N/A
180440 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 129.50 mm5.098 in N/A 0.004 in0.09 mm N/A 0.024 in0.60 mm N/A S-130 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S132 S-70 N/A
180441 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 131.50 mm5.177 in N/A 0.004 in0.09 mm N/A 0.024 in0.60 mm N/A S-132 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S135 S-70 N/A
180442 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 134.50 mm5.295 in N/A 0.004 in0.09 mm N/A 0.024 in0.60 mm N/A S-135 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S14 S-70 N/A
180443 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 13.50 mm0.531 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-14 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S140 S-70 N/A
180444 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 139.50 mm5.492 in N/A 0.004 in0.09 mm N/A 0.024 in0.60 mm N/A S-140 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S145 S-70 N/A
180445 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 144.50 mm5.689 in N/A 0.004 in0.09 mm N/A 0.024 in0.60 mm N/A S-145 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S15 S-70 N/A
180446 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 14.5 mm0.571 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-15 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S150 S-70 N/A
180447 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 149.50 mm5.886 in N/A 0.004 in0.09 mm N/A 0.024 in0.60 mm N/A S-150 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S16 S-70 N/A
180448 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 15.50 mm0.610 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-16 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S18 S-70 N/A
180449 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 17.50 mm0.689 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-18 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S20 S-70 N/A
180450 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 19.50 mm0.768 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-20 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S22 S-70 N/A
180451 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 21.50 mm0.846 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-22 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S22.4 S-70 N/A
180452 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 21.90 mm0.862 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-22.4 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S24 S-70 N/A
180453 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 23.5 mm0.925 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-24 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S25 S-70 N/A
180454 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 24.50 mm0.965 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-25 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S26 S-70 N/A
180455 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 25.50 mm1.004 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-26 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S28 S-70 N/A
180456 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 27.50 mm1.083 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-28 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S29 S-70 N/A
180457 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 28.50 mm1.122 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-29 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S3 S-70 N/A
180458 		N/A JIS Standard O-Ring N/A Silicone N/A 0.059 in1.50 mm N/A 70 N/A 2.50 mm0.098 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-3 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S30 S-70 N/A
180459 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 29.50 mm1.161 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-30 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
S31.5 S-70 N/A
180460 		N/A JIS Standard O-Ring N/A Silicone N/A 0.079 in2.00 mm N/A 70 N/A 31.00 mm1.220 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-31.5 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
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