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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. EP is also known as: Eythylene Propylene, EPR, EPDM, EPT, E.

EP is an elastomer which is characterized by wide range of applications and good chemical resistance. Ethylene propylene compounds have good resistance to detergents, alkalis, mild acids, greases, silicone oils, and alcohols. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
JIS O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Section Width

Durometer

Inside Diameter

CSW Tolerance

ID Tolerance

JIS Number

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O-Ring Industries

Quantity
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
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