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’s JIS BUNA O-Rings offer superior sealing solutions for various industrial applications, ensuring top-notch reliability and performance in demanding environments. Designed to meet the Japanese Industrial Standards (JIS), these O-rings are manufactured from high-quality BUNA-N (Nitrile) material, known for its exceptional resistance to oils, fuels, and various other chemicals. The precise engineering and careful selection of materials make these O-rings ideal for industries requiring secure seals in automotive, marine, hydraulic, and manufacturing sectors. With a focus on both performance and durability, OneMonroe’s JIS BUNA O-Rings are the perfect choice for applications where robust, long-lasting sealing is essential.

At OneMonroe, quality and consistency are paramount in every product we offer. Our JIS BUNA O-Rings undergo stringent testing and quality assurance procedures to ensure they meet both international standards and the high expectations of our customers. The BUNA-N material used in these O-rings is specially selected for its resilience in extreme temperatures and high-pressure conditions, providing dependable performance in both hot and cold environments. Additionally, OneMonroe’s comprehensive inventory allows us to supply various sizes and specifications of JIS BUNA O-Rings, accommodating both common and unique sealing requirements with ease.

Choosing OneMonroe means selecting a trusted partner in sealing solutions, backed by years of expertise and commitment to excellence. Our JIS BUNA O-Rings provide not only the assurance of high-quality materials but also the peace of mind that comes from using a product engineered for precision and durability. With fast delivery options and a responsive customer support team, OneMonroe is dedicated to providing the best in industrial sealing technology to keep your operations running smoothly and efficiently. Trust OneMonroe’s JIS BUNA O-Rings for a sealing solution that delivers reliable results every time.

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

O-Ring Industries

Quantity
S32 B-70 N/A
178581 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 31.50 mm1.240 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-32 N/A O-rings are used in the military defense and agriculture industries.
S32 B-90 N/A
178582 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 31.50 mm1.240 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-32 N/A O-rings are used in the military defense and agriculture industries.
S34 B-70 N/A
178583 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 33.50 mm1.319 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-34 N/A O-rings are used in the military defense and agriculture industries.
S34 B-90 N/A
178584 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 33.50 mm1.319 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-34 N/A O-rings are used in the military defense and agriculture industries.
S35 B-70 N/A
178585 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 34.50 mm1.358 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-35 N/A O-rings are used in the military defense and agriculture industries.
S35 B-90 N/A
178586 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 34.50 mm1.358 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-35 N/A O-rings are used in the military defense and agriculture industries.v
S35.5 B-70 N/A
178587 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 35.00 mm1.378 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-35.5 N/A O-rings are used in the military defense and agriculture industries.
S35.5 B-90 N/A
178588 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 35.00 mm1.378 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-35.5 N/A O-rings are used in the military defense and agriculture industries.
S36 B-70 N/A
178589 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 35.50 mm1.398 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-36 N/A O-rings are used in the military defense and agriculture industries.
S36 B-90 N/A
178590 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 35.50 mm1.398 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-36 N/A O-rings are used in the military defense and agriculture industries.
S38 B-70 N/A
178591 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 37.50 mm1.476 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-38 N/A O-rings are used in the military defense and agriculture industries.
S38 B-90 N/A
178592 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 37.50 mm1.476 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-38 N/A O-rings are used in the military defense and agriculture industries.
S39 B-70 N/A
178593 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 38.50 mm1.516 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-39 N/A O-rings are used in the military defense and agriculture industries.
S39 B-90 N/A
178594 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 38.50 mm1.516 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-39 N/A O-rings are used in the military defense and agriculture industries.
S4 B-70 N/A
178595 		N/A JIS Standard O-Ring N/A Buna N/A 0.059 in1.50 mm N/A 70 N/A 3.50 mm0.138 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-4 N/A O-rings are used in the military defense and agriculture industries.
S4 B-90 N/A
178596 		N/A JIS Standard O-Ring N/A Buna N/A 0.059 in1.50 mm N/A 90 N/A 3.50 mm0.138 in N/A 0.004 in0.08 mm N/A 0.006 in0.15 mm N/A S-4 N/A O-rings are used in the military defense and agriculture industries.
S40 B-70 N/A
178597 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 39.50 mm1.555 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-40 N/A O-rings are used in the military defense and agriculture industries.
S40 B-90 N/A
178598 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 39.50 mm1.555 in N/A 0.004 in0.09 mm N/A 0.006 in0.15 mm N/A S-40 N/A O-rings are used in the military defense and agriculture industries.
S42 B-70 N/A
178599 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 41.50 mm1.634 in N/A 0.004 in0.09 mm N/A 0.01 in0.25 mm N/A S-42 N/A O-rings are used in the military defense and agriculture industries.
S42 B-90 N/A
178600 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 41.50 mm1.634 in N/A 0.004 in0.09 mm N/A 0.01 in0.25 mm N/A S-42 N/A O-rings are used in the military defense and agriculture industries.v
S44 B-70 N/A
178601 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 43.50 mm1.713 in N/A 0.004 in0.09 mm N/A 0.01 in0.25 mm N/A S-44 N/A O-rings are used in the military defense and agriculture industries.
S44 B-90 N/A
178602 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 43.50 mm1.713 in N/A 0.004 in0.09 mm N/A 0.01 in0.25 mm N/A S-44 N/A O-rings are used in the military defense and agriculture industries.
S45 B-70 N/A
178603 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 44.50 mm1.752 in N/A 0.004 in0.09 mm N/A 0.01 in0.25 mm N/A S-45 N/A O-rings are used in the military defense and agriculture industries.
S45 B-90 N/A
178604 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 90 N/A 44.50 mm1.752 in N/A 0.004 in0.09 mm N/A 0.01 in0.25 mm N/A S-45 N/A O-rings are used in the military defense and agriculture industries.
S46 B-70 N/A
178605 		N/A JIS Standard O-Ring N/A Buna N/A 0.079 in2.00 mm N/A 70 N/A 45.5 mm1.791 in N/A 0.004 in0.09 mm N/A 0.01 in0.25 mm N/A S-46 N/A O-rings are used in the military defense and agriculture industries.
Unit of Measure
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