Monroe
OneMonroe
Locations Throughout the Country
ISO 9001:2015
Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
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OneMonroe offers high-quality polyurethane O-rings designed for a wide range of demanding applications where reliability and durability are paramount. These O-rings are crafted from premium polyurethane material, which provides outstanding resistance to wear, tear, and abrasion, making them ideal for sealing in environments exposed to extreme pressure, temperature fluctuations, and chemical interactions. Their robust structure ensures a long-lasting, dependable seal, preventing leaks and maintaining optimal performance in even the toughest industrial settings. Whether you need a solution for hydraulic systems, pneumatic equipment, or other machinery, OneMonroe Polyurethane O-Rings deliver precision and resilience.

Our range includes JIS (Japanese Industrial Standard) polyurethane O-rings, specifically engineered to meet stringent industry standards. These O-rings are available in various sizes and dimensions, allowing for a custom fit in numerous applications and systems. OneMonroe’s JIS polyurethane O-rings are known for their excellent resistance to oil, grease, and chemicals, which extends their lifespan and minimizes maintenance needs. This chemical resistance also makes them suitable for use in environments where other materials may degrade or fail prematurely. Additionally, their durable design ensures they can withstand high pressure without losing their integrity, making them a reliable choice for applications in demanding sectors like automotive, aerospace, and manufacturing.

At OneMonroe, we understand the importance of reliable sealing solutions in keeping your systems running smoothly and efficiently. Our polyurethane O-rings are manufactured to provide unmatched durability and performance, making them an investment in quality and reliability. Backed by OneMonroe’s commitment to excellence, these O-rings are an ideal choice for customers seeking high-performance sealing solutions that excel in both everyday and high-stress environments. Choose OneMonroe Polyurethane O-Rings for superior protection, a longer service life, and the peace of mind that comes with quality engineering and trusted materials.

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

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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Unit of Measure
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