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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. Polyurethane is also known as urethane, cast urethan and millable urethane.

Polyurethane is also known as urethane, cast urethan and millable urethane. Exceptional tensile strength. Abrasion and low temperature resistance. Typical applications include hydraulic seals, gaskets, diaphragms, hoses, and wheels for skate boards. 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
P250 U-70 N/A
179941 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P250 U-90 N/A
179942 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P255 U-70 N/A
179943 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P255 U-90 N/A
179944 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P26 U-70 N/A
179945 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P26 U-90 N/A
179946 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.138 in3.50 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P260 U-70 N/A
179947 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P260 U-90 N/A
179948 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P265 U-70 N/A
179949 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P265 U-90 N/A
179950 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P270 U-70 N/A
179951 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P270 U-90 N/A
179952 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P275 U-70 N/A
179953 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P275 U-90 N/A
179954 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P28 U-70 N/A
179955 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P28 U-90 N/A
179956 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.138 in3.50 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P280 U-70 N/A
179957 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P280 U-90 N/A
179958 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P285 U-70 N/A
179959 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P285 U-90 N/A
179960 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.331 in8.40 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P29 U-70 N/A
179961 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P29 U-90 N/A
179962 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.138 in3.50 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P29.5 U-70 N/A
179963 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P29.5 U-90 N/A
179964 		N/A JIS Standard O-Ring N/A Polyurethane N/A 0.138 in3.50 mm N/A 90 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
P290 U-70 N/A
179965 		N/A JIS Standard O-Ring N/A Polyurethane 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 N/A O-rings are used in the military, automotive, aerospace and agriculture industries.
Unit of Measure
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