JIS EP O-Rings | OneMonroe

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.

Item #	IntegrationID	Type	Material	Cross Section Width	Durometer	Inside Diameter	CSW Tolerance	ID Tolerance	JIS Number
P250 EP-70	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
P255 EP-70	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
P26 EP-70	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
P260 EP-70	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
P265 EP-70	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
P270 EP-70	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
P275 EP-70	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
P28 EP-70	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
P280 EP-70	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
P285 EP-70	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
P29 EP-70	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
P29.5 EP-70	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
P290 EP-70	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
P295 EP-70	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
P30 EP-70	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
P300 EP-70	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
P31 EP-70	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
P31.5 EP-70	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
P315 EP-70	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
P32 EP-70	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
P320 EP-70	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
P335 EP-70	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
P34 EP-70	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
P340 EP-70	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
P35 EP-70	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

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

P255 EP-70

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

P26 EP-70

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

P260 EP-70

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

P265 EP-70

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

P270 EP-70

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

P275 EP-70

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

P28 EP-70

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

P280 EP-70

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

P285 EP-70

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

P29 EP-70

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

P29.5 EP-70

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

P290 EP-70

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

P295 EP-70

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

P30 EP-70

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

P300 EP-70

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

P31 EP-70

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

P31.5 EP-70

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

P315 EP-70

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

P32 EP-70

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

P320 EP-70

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

P335 EP-70

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

P34 EP-70

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

P340 EP-70

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

P35 EP-70

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