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
P35.5 EP-70	N/A 179346	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 35.20 mm1.386 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-35.5
P355 EP-70	N/A 179347	N/A JIS Standard O-Ring	N/A EP	N/A 0.331 in8.40 mm	N/A 70	N/A 354.50 mm13.957 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-355
P36 EP-70	N/A 179348	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 35.70 mm1.406 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-36
P360 EP-70	N/A 179349	N/A JIS Standard O-Ring	N/A EP	N/A 0.331 in8.40 mm	N/A 70	N/A 359.50 mm14.154 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-360
P375 EP-70	N/A 179350	N/A JIS Standard O-Ring	N/A EP	N/A 0.331 in8.40 mm	N/A 70	N/A 374.50 mm14.744 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-375
P38 EP-70	N/A 179351	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 37.70 mm1.484 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-38
P385 EP-70	N/A 179352	N/A JIS Standard O-Ring	N/A EP	N/A 0.331 in8.40 mm	N/A 70	N/A 384.50 mm15.138 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-385
P39 EP-70	N/A 179353	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 38.70 mm1.524 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-39
P4 EP-70	N/A 179354	N/A JIS Standard O-Ring	N/A EP	N/A 0.075 in1.90 mm	N/A 70	N/A 3.80 mm0.150 in	N/A 0.003 in0.09 mm	N/A 0.005 in0.12 mm	N/A P-4
P40 EP-70	N/A 179355	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 39.70 mm1.563 in	N/A 0.004 in0.10 mm	N/A 0.006 in0.15 mm	N/A P-40
P400 EP-70	N/A 179356	N/A JIS Standard O-Ring	N/A EP	N/A 0.331 in8.40 mm	N/A 70	N/A 399.5 mm15.728 in	N/A 0.006 in0.18 mm	N/A 0.039 in1.00 mm	N/A P-400
P41 EP-70	N/A 179357	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 40.70 mm1.602 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-41
P42 EP-70	N/A 179358	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 41.70 mm1.642 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-42
P44 EP-70	N/A 179359	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 43.70 mm1.720 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-44
P45 EP-70	N/A 179360	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 44.70 mm1.760 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-45
P46 EP-70	N/A 179361	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 45.70 mm1.799 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-46
P48 EP-70	N/A 179362	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 47.70 mm1.878 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-48
P48A EP-70	N/A 179363	N/A JIS Standard O-Ring	N/A EP	N/A 0.224 in5.70 mm	N/A 70	N/A 47.60 mm1.874 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-48A
P49 EP-70	N/A 179364	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 48.70 mm1.917 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-49
P5 EP-70	N/A 179365	N/A JIS Standard O-Ring	N/A EP	N/A 0.075 in1.90 mm	N/A 70	N/A 4.80 mm0.189 in	N/A 0.003 in0.09 mm	N/A 0.005 in0.12 mm	N/A P-5
P50 EP-70	N/A 179366	N/A JIS Standard O-Ring	N/A EP	N/A 0.138 in3.50 mm	N/A 70	N/A 49.70 mm1.957 in	N/A 0.004 in0.10 mm	N/A 0.01 in0.25 mm	N/A P-50
P50A EP-70	N/A 179367	N/A JIS Standard O-Ring	N/A EP	N/A 0.224 in5.70 mm	N/A 70	N/A 49.60 mm1.953 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-50A
P52 EP-70	N/A 179368	N/A JIS Standard O-Ring	N/A EP	N/A 0.224 in5.70 mm	N/A 70	N/A 51.60 mm2.031 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-52
P53 EP-70	N/A 179369	N/A JIS Standard O-Ring	N/A EP	N/A 0.224 in5.70 mm	N/A 70	N/A 52.6 mm2.071 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-53
P55 EP-70	N/A 179370	N/A JIS Standard O-Ring	N/A EP	N/A 0.224 in5.70 mm	N/A 70	N/A 54.60 mm2.150 in	N/A 0.006 in0.15 mm	N/A 0.01 in0.25 mm	N/A P-55

N/A
179346

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 35.20 mm1.386 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-35.5

P355 EP-70

N/A
179347

N/A JIS Standard O-Ring

N/A EP

N/A 0.331 in8.40 mm

N/A 70

N/A 354.50 mm13.957 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-355

P36 EP-70

N/A
179348

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 35.70 mm1.406 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-36

P360 EP-70

N/A
179349

N/A JIS Standard O-Ring

N/A EP

N/A 0.331 in8.40 mm

N/A 70

N/A 359.50 mm14.154 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-360

P375 EP-70

N/A
179350

N/A JIS Standard O-Ring

N/A EP

N/A 0.331 in8.40 mm

N/A 70

N/A 374.50 mm14.744 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-375

P38 EP-70

N/A
179351

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 37.70 mm1.484 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-38

P385 EP-70

N/A
179352

N/A JIS Standard O-Ring

N/A EP

N/A 0.331 in8.40 mm

N/A 70

N/A 384.50 mm15.138 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-385

P39 EP-70

N/A
179353

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 38.70 mm1.524 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-39

P4 EP-70

N/A
179354

N/A JIS Standard O-Ring

N/A EP

N/A 0.075 in1.90 mm

N/A 70

N/A 3.80 mm0.150 in

N/A 0.003 in0.09 mm

N/A 0.005 in0.12 mm

N/A P-4

P40 EP-70

N/A
179355

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 39.70 mm1.563 in

N/A 0.004 in0.10 mm

N/A 0.006 in0.15 mm

N/A P-40

P400 EP-70

N/A
179356

N/A JIS Standard O-Ring

N/A EP

N/A 0.331 in8.40 mm

N/A 70

N/A 399.5 mm15.728 in

N/A 0.006 in0.18 mm

N/A 0.039 in1.00 mm

N/A P-400

P41 EP-70

N/A
179357

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 40.70 mm1.602 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-41

P42 EP-70

N/A
179358

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 41.70 mm1.642 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-42

P44 EP-70

N/A
179359

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 43.70 mm1.720 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-44

P45 EP-70

N/A
179360

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 44.70 mm1.760 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-45

P46 EP-70

N/A
179361

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 45.70 mm1.799 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-46

P48 EP-70

N/A
179362

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 47.70 mm1.878 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-48

P48A EP-70

N/A
179363

N/A JIS Standard O-Ring

N/A EP

N/A 0.224 in5.70 mm

N/A 70

N/A 47.60 mm1.874 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-48A

P49 EP-70

N/A
179364

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 48.70 mm1.917 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-49

P5 EP-70

N/A
179365

N/A JIS Standard O-Ring

N/A EP

N/A 0.075 in1.90 mm

N/A 70

N/A 4.80 mm0.189 in

N/A 0.003 in0.09 mm

N/A 0.005 in0.12 mm

N/A P-5

P50 EP-70

N/A
179366

N/A JIS Standard O-Ring

N/A EP

N/A 0.138 in3.50 mm

N/A 70

N/A 49.70 mm1.957 in

N/A 0.004 in0.10 mm

N/A 0.01 in0.25 mm

N/A P-50

P50A EP-70

N/A
179367

N/A JIS Standard O-Ring

N/A EP

N/A 0.224 in5.70 mm

N/A 70

N/A 49.60 mm1.953 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-50A

P52 EP-70

N/A
179368

N/A JIS Standard O-Ring

N/A EP

N/A 0.224 in5.70 mm

N/A 70

N/A 51.60 mm2.031 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-52

P53 EP-70

N/A
179369

N/A JIS Standard O-Ring

N/A EP

N/A 0.224 in5.70 mm

N/A 70

N/A 52.6 mm2.071 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-53

P55 EP-70

N/A
179370

N/A JIS Standard O-Ring

N/A EP

N/A 0.224 in5.70 mm

N/A 70

N/A 54.60 mm2.150 in

N/A 0.006 in0.15 mm

N/A 0.01 in0.25 mm

N/A P-55