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.
Cross Section Width (in)
Cross Section Width (mm)
Durometer
Inside Diameter (mm)
Inside Diameter (in)
                            Item # | 
                        
                            IntegrationID | 
                        
                            Type | 
                        
                            Material | 
                        
                            Cross Section Width | 
                        
                            Durometer | 
                        
                            Inside Diameter | 
                        
                            CSW Tolerance | 
                        
                            ID Tolerance | 
                        
                            JIS Number | 
                        
                            O-Ring Industries | 
                        
                            Product Guides | 
                                                        
|---|---|---|---|---|---|---|---|---|---|---|---|
| G25 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178231  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 70 | Inside Diameter N/A 24.40 mm0.961 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-25 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G25 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178232  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 90 | Inside Diameter N/A 24.40 mm0.961 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-25 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G250 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178233  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 70 | Inside Diameter N/A 249.3 mm9.815 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-250 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G250 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178234  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 90 | Inside Diameter N/A 249.3 mm9.815 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-250 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G255 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178235  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 70 | Inside Diameter N/A 254.3 mm10.012 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-255 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G255 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178236  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 90 | Inside Diameter N/A 254.3 mm10.012 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-255 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries.v | Product Guides N/A Seal Guides | 
| G260 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178237  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 70 | Inside Diameter N/A 259.3 mm10.209 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-260 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G260 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178238  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 90 | Inside Diameter N/A 259.3 mm10.209 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-260 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G270 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178239  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 70 | Inside Diameter N/A 269.3 mm10.602 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-270 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G270 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178240  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 90 | Inside Diameter N/A 269.3 mm10.602 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-270 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G280 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178241  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 70 | Inside Diameter N/A 279.30 mm10.996 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-280 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G280 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178242  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 90 | Inside Diameter N/A 279.30 mm10.996 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-280 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G290 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178243  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 70 | Inside Diameter N/A 289.30 mm11.390 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-290 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G290 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178244  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 90 | Inside Diameter N/A 289.30 mm11.390 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-290 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G30 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178245  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 70 | Inside Diameter N/A 29.40 mm1.157 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-30 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G30 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178246  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 90 | Inside Diameter N/A 29.40 mm1.157 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-30 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries.v | Product Guides N/A Seal Guides | 
| G300 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178247  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 70 | Inside Diameter N/A 299.30 mm11.783 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-300 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G300 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178248  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.224 in5.70 mm | Durometer N/A 90 | Inside Diameter N/A 299.30 mm11.783 in | CSW Tolerance N/A 0.006 in0.15 mm | ID Tolerance N/A 0.031 in0.80 mm | JIS Number N/A G-300 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G35 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178249  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 70 | Inside Diameter N/A 34.40 mm1.354 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-35 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G35 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178250  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 90 | Inside Diameter N/A 34.40 mm1.354 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-35 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G40 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178251  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 70 | Inside Diameter N/A 39.40 mm1.551 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-40 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G40 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178252  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 90 | Inside Diameter N/A 39.40 mm1.551 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.006 in0.15 mm | JIS Number N/A G-40 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G45 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178253  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 70 | Inside Diameter N/A 44.40 mm1.748 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.01 in0.25 mm | JIS Number N/A G-45 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G45 B-90 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178254  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 90 | Inside Diameter N/A 44.40 mm1.748 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.01 in0.25 mm | JIS Number N/A G-45 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
| G50 B-70 | 
                                    
                                        IntegrationID                                                    
 N/A                                                         178255  | 
                                Type N/A JIS Standard O-Ring | Material N/A Buna | Cross Section Width N/A 0.122 in3.10 mm | Durometer N/A 70 | Inside Diameter N/A 49.40 mm1.945 in | CSW Tolerance N/A 0.004 in0.10 mm | ID Tolerance N/A 0.01 in0.25 mm | JIS Number N/A G-50 | O-Ring Industries N/A O-rings are used in the military defense and agriculture industries. | Product Guides N/A Seal Guides | 
 
