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).

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Inside Diamter (mm)

Inside Diamter (in)

Cross Section Width (in)

Cross Section Width (mm)

Item #

Inside Diamter

Cross Section Width

Durometer

CSW Tolerance

JIS Number

ID Tolerance

P175 S-70 N/A 174.50 mm6.870 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-175 N/A 0.024 in0.60 mm
P18 S-70 N/A 17.80 mm0.701 in N/A 0.094 in2.40 mm N/A 70 N/A 0.003 in0.09 mm N/A P-18 N/A 0.005 in0.12 mm
P180 S-70 N/A 179.50 mm7.067 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-180 N/A 0.024 in0.60 mm
P185 S-70 N/A 184.50 mm7.264 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-185 N/A 0.031 in0.80 mm
P190 S-70 N/A 189.50 mm7.461 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-190 N/A 0.031 in0.80 mm
P195 S-70 N/A 194.50 mm7.657 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-195 N/A 0.031 in0.80 mm
P20 S-70 N/A 19.80 mm0.780 in N/A 0.094 in2.40 mm N/A 70 N/A 0.003 in0.09 mm N/A P-20 N/A 0.006 in0.15 mm
P200 S-70 N/A 199.5 mm7.854 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-200 N/A 0.031 in0.80 mm
P205 S-70 N/A 204.5 mm8.051 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-205 N/A 0.031 in0.80 mm
P209 S-70 N/A 208.5 mm8.209 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-209 N/A 0.031 in0.80 mm
P21 S-70 N/A 20.80 mm0.819 in N/A 0.094 in2.40 mm N/A 70 N/A 0.003 in0.09 mm N/A P-21 N/A 0.006 in0.15 mm
P210 S-70 N/A 209.5 mm8.248 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-210 N/A 0.031 in0.80 mm
P215 S-70 N/A 214.5 mm8.445 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-215 N/A 0.031 in0.80 mm
P22 S-70 N/A 21.80 mm0.858 in N/A 0.094 in2.40 mm N/A 70 N/A 0.003 in0.09 mm N/A P-22 N/A 0.006 in0.15 mm
P22.4 S-70 N/A 22.10 mm0.870 in N/A 0.138 in3.50 mm N/A 70 N/A 0.004 in0.10 mm N/A P-22.4 N/A 0.006 in0.15 mm
P220 S-70 N/A 219.5 mm8.642 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-220 N/A 0.031 in0.80 mm
P225 S-70 N/A 224.5 mm8.839 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-225 N/A 0.031 in0.80 mm
P22A S-70 N/A 21.70 mm0.854 in N/A 0.138 in3.50 mm N/A 70 N/A 0.004 in0.10 mm N/A P-22A N/A 0.006 in0.15 mm
P230 S-70 N/A 229.5 mm9.035 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-230 N/A 0.031 in0.80 mm
P235 S-70 N/A 234.5 mm9.232 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-235 N/A 0.031 in0.80 mm
P24 S-70 N/A 23.70 mm0.933 in N/A 0.138 in3.50 mm N/A 70 N/A 0.004 in0.10 mm N/A P-24 N/A 0.006 in0.15 mm
P240 S-70 N/A 239.5 mm9.429 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-240 N/A 0.031 in0.80 mm
P245 S-70 N/A 244.5 mm9.626 in N/A 0.331 in8.40 mm N/A 70 N/A 0.006 in0.18 mm N/A P-245 N/A 0.031 in0.80 mm
P25 S-70 N/A 24.70 mm0.972 in N/A 0.138 in3.50 mm N/A 70 N/A 0.004 in0.10 mm N/A P-25 N/A 0.006 in0.15 mm
P25.5 S-70 N/A 25.20 mm0.992 in N/A 0.138 in3.50 mm N/A 70 N/A 0.004 in0.10 mm N/A P-25.5 N/A 0.006 in0.15 mm
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