• JIS O-Rings

OneMonroe JIS EP O-Rings offer industry-leading performance for applications requiring durable, high-quality seals. Crafted from EP (ethylene propylene) material, these O-rings are specifically designed to withstand a wide range of temperatures and provide excellent resistance to water, steam, and various chemical compounds. Their robust composition makes them perfect for challenging environments where other seals may fall short, providing consistent reliability and extending the lifespan of your equipment. Engineered to meet Japanese Industrial Standards (JIS), these O-rings offer precise sizing and exceptional sealing efficiency across multiple industries, from automotive and aerospace to manufacturing and heavy machinery.

Our EP O-rings undergo rigorous quality control processes to ensure they meet the highest industry standards. With OneMonroe, you can trust that each JIS EP O-ring is manufactured with top-tier materials and precision engineering, ensuring compatibility and durability under intense conditions. Thanks to their superior elastomeric properties, they resist deformation and maintain their sealing power, even in high-pressure applications. Whether you need a solution for low- or high-temperature applications, OneMonroe JIS EP O-rings provide a flexible, reliable sealing option designed to reduce maintenance needs and improve operational efficiency.

At OneMonroe, we understand that each project has unique requirements, and we are committed to providing O-rings that exceed expectations in terms of both performance and value. Available in a variety of sizes and specifications, our JIS EP O-rings are suited to custom applications and standard replacements alike. By choosing OneMonroe, you gain access to a team dedicated to offering high-quality sealing solutions and exceptional customer support to help you select the right product for your specific needs. Trust in OneMonroe's JIS EP O-rings to deliver durability, versatility, and efficiency to every project.

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

N/A
179321 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 249.5 mm9.823 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-250
N/A
179322 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 254.5 mm10.020 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-255
N/A
179323 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 25.70 mm1.012 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-26
N/A
179324 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 259.5 mm10.217 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-260
N/A
179325 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 264.5 mm10.413 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-265
N/A
179326 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 269.5 mm10.610 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-270
N/A
179327 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 274.50 mm10.807 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-275
N/A
179328 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 27.70 mm1.091 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-28
N/A
179329 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 279.50 mm11.004 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-280
N/A
179330 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 284.50 mm11.201 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-285
N/A
179331 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 28.70 mm1.130 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-29
N/A
179332 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 29.20 mm1.150 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-29.5
N/A
179333 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 289.50 mm11.398 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-290
N/A
179334 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 294.50 mm11.594 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-295
N/A
179335 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 29.70 mm1.169 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-30
N/A
179336 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 299.50 mm11.791 in N/A 0.006 in0.18 mm N/A 0.031 in0.80 mm N/A P-300
N/A
179337 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 30.70 mm1.209 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-31
N/A
179338 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 31.20 mm1.228 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-31.5
N/A
179339 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 314.50 mm12.382 in N/A 0.006 in0.18 mm N/A 0.039 in1.00 mm N/A P-315
N/A
179340 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 31.70 mm1.248 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-32
N/A
179341 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 319.50 mm12.579 in N/A 0.006 in0.18 mm N/A 0.039 in1.00 mm N/A P-320
N/A
179342 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 334.50 mm13.169 in N/A 0.006 in0.18 mm N/A 0.039 in1.00 mm N/A P-335
N/A
179343 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 33.70 mm1.327 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-34
N/A
179344 		N/A JIS Standard O-Ring N/A EP N/A 0.331 in8.40 mm N/A 70 N/A 339.50 mm13.366 in N/A 0.006 in0.18 mm N/A 0.039 in1.00 mm N/A P-340
N/A
179345 		N/A JIS Standard O-Ring N/A EP N/A 0.138 in3.50 mm N/A 70 N/A 34.70 mm1.366 in N/A 0.004 in0.10 mm N/A 0.006 in0.15 mm N/A P-35
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