JIS Silicone O-Rings
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.
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.
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.
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Cross Section Width (in)
Cross Section Width (mm)
Inside Diameter (mm)
Inside Diameter (in)
Item # |
IntegrationID |
Type |
Material |
Cross Section Width |
Durometer |
Inside Diameter |
CSW Tolerance |
ID Tolerance |
JIS Number |
Call for a Quote |
O-Ring Industries |
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P250 S-70 P250 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180361 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 249.5 mm9.823 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-250 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P255 S-70 P255 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180362 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 254.5 mm10.020 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-255 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P26 S-70 P26 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180363 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 25.70 mm1.012 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-26 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P260 S-70 P260 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180364 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 259.5 mm10.217 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-260 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P265 S-70 P265 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180365 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 264.5 mm10.413 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-265 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P270 S-70 P270 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180366 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 269.5 mm10.610 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-270 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P275 S-70 P275 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180367 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 274.50 mm10.807 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-275 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P28 S-70 P28 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180368 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 27.70 mm1.091 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-28 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P280 S-70 P280 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180369 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 279.50 mm11.004 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-280 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P285 S-70 P285 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180370 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 284.50 mm11.201 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-285 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P29 S-70 P29 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180371 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 28.70 mm1.130 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-29 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P29.5 S-70 P29.5 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180372 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 29.20 mm1.150 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-29.5 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P290 S-70 P290 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180373 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 289.50 mm11.398 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-290 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P295 S-70 P295 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180374 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 294.50 mm11.594 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-295 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P30 S-70 P30 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180375 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 29.70 mm1.169 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-30 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P300 S-70 P300 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180376 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 299.50 mm11.791 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A P-300 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P31 S-70 P31 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180377 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 30.70 mm1.209 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-31 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P31.5 S-70 P31.5 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180378 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 31.20 mm1.228 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-31.5 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P315 S-70 P315 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180379 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 314.50 mm12.382 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.039 in1.00 mm | JIS Number N/A P-315 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P32 S-70 P32 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180380 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 31.70 mm1.248 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-32 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P320 S-70 P320 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180381 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 319.50 mm12.579 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.039 in1.00 mm | JIS Number N/A P-320 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P335 S-70 P335 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180382 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 334.50 mm13.169 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.039 in1.00 mm | JIS Number N/A P-335 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P34 S-70 P34 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180383 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 33.70 mm1.327 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-34 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P340 S-70 P340 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180384 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.331 in8.40 mm | Durometer N/A 70 | Inside Diameter N/A 339.50 mm13.366 in | CSW Tolerance N/A 0.006 in0.18 mm | ID Tolerance N/A 0.039 in1.00 mm | JIS Number N/A P-340 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |
P35 S-70 P35 S-70/Asset/jisorings.jpg |
IntegrationID
N/A 180385 |
Type N/A JIS Standard O-Ring | Material N/A Silicone | Cross Section Width N/A 0.138 in3.50 mm | Durometer N/A 70 | Inside Diameter N/A 34.70 mm1.366 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A P-35 | Call for a Quote N/A | O-Ring Industries N/A O-rings are used in the military, automotive, aerospace and agriculture industries. |