Monroe
OneMonroe
Locations Throughout the Country
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Tel: (877) 740-2007
Fax: (800) 453-9683
Email: sales@askmonroe.com
Website: monroeengineering.com
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OneMonroe Aflas O-Rings are crafted to meet the demanding needs of applications that require robust chemical and thermal resistance. Made from premium-quality Aflas, these O-rings are designed to withstand exposure to a wide range of chemicals, including acids, alkalis, amines, and steam, making them an essential component in industrial settings where chemical integrity is critical. They excel in high-temperature environments, withstanding heat up to 446°F (230°C), which makes them an excellent choice for applications in the automotive, aerospace, and oil and gas industries where durability and safety are non-negotiable. Their resilience ensures optimal performance in even the harshest operational conditions.

OneMonroe’s Aflas O-Rings adhere to the JIS (Japanese Industrial Standards), which means they are meticulously manufactured for precision and reliability. These O-rings are particularly valuable for equipment that operates in demanding environments with extended exposure to chemicals, oils, or extreme heat, as they prevent leaks and ensure the longevity of components. Whether used in pumps, valves, or compressors, OneMonroe Aflas O-Rings maintain their integrity and performance over extended periods, helping to minimize downtime and repair costs for critical machinery. Additionally, their resistance to electrical conductivity makes them highly suitable for electrical and electronic applications where insulation is essential.

At OneMonroe, we are committed to delivering products that match the highest standards of quality and reliability. Our Aflas O-Rings undergo rigorous quality testing to ensure they meet stringent industry requirements, giving our clients peace of mind knowing they have dependable sealing solutions. With the combination of chemical resistance, thermal durability, and precision manufacturing, OneMonroe Aflas O-Rings offer unmatched performance for various industries, providing the strength and reliability needed in today’s challenging industrial environments.

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 AFLAS-75 N/A
180721 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180722 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180723 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180724 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180725 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 75 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 AFLAS-83 N/A
180726 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 83 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 AFLAS-75 N/A
180727 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180728 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180729 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180730 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180731 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180732 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180733 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180734 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180735 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 75 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 AFLAS-83 N/A
180736 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 83 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 AFLAS-75 N/A
180737 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180738 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180739 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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 AFLAS-83 N/A
180740 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 83 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 AFLAS-75 N/A
180741 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 75 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 AFLAS-83 N/A
180742 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 83 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 AFLAS-75 N/A
180743 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 75 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 AFLAS-83 N/A
180744 		N/A JIS Standard O-Ring N/A Aflas N/A 0.138 in3.50 mm N/A 83 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 AFLAS-75 N/A
180745 		N/A JIS Standard O-Ring N/A Aflas N/A 0.331 in8.40 mm N/A 75 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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