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Rubber O-Ring Seals-NBR / FKM / EPDM / Silicone-AS568 / Metric Sizes, Customizable-For Fire Extinguisher
The O-ring(O-ring seal)is the most widely used sealing component in mechanical design due to its simple construction, reliable performance, low cost, and easy installation. It is a circular elastomeric ring with a round cross--section, typically seated in a groove and compressed between two or more mating surfaces to create a leak-tight seal. O-rings are suitable for both static applications(e.g., flanges, valve covers, pipe joints)and dynamic applications(e.g., rotating shafts, hydraulic cylinders, pistons).
Our rubber O-rings are precision-molded from high-quality elastomers to provide consistent sealing performance across a wide range of pressures, temperatures, and fluid media. We offer both standard AS568 inch-sized O-rings(the most common imperial standard in North America)and metric O-rings(sized in millimeters)to meet global requirements. Custom sizes, colors, and material formulations are available upon request.
| Parameter | Specification |
|---|---|
| Product Name | Rubber O-Ring Seal |
| Shape | Toroid / Circular ring |
| Cross-section | Round(circular)standard; X-ring / Quad-ring options available |
| Standard Sizes | AS568(inch-series dash numbers) / Metric(ISO 3601-1) / JIS B 2401 / DIN 3771 / BS |
| Inside Diameter(ID)Range | AS568: 0.029" - 26.000"(0.74 mm - 660 mm); Metric: Custom |
| Cross-section(CS)Range | AS568: 0.040" - 0.275"(1.0 mm - 7.0 mm) typical; Metric: 1.0 mm - 12.0 mm |
| Material Options | NBR, FKM, EPDM, Silicone(VMQ), HNBR, FVMQ, CR, ACM, NR, FFKM, PU, etc. |
| Hardness(Shore A) | 30 - 90 Shore A(standard: 70 / 75 / 90) |
| Temperature Range | Dependent on material: -60°C to +220°C(-76°F to +428°F)max |
| Color | Black(standard), brown, red, green, blue, white, transparent(custom colors available) |
| Tensile Strength | 10 - 25 MPa depending on material |
| Elongation at Break | 200% - 500% depending on material |
| Compression Set | ≤ 25%(ASTM D395, method B) |
| Certifications(available) | RoHS, REACH, FDA(for silicone/FKM food contact grades), NSF(on request). UL/FM available only for certified fire protection products - this product is supplied without third-party certification. |
| Packaging | Poly bags / Plastic boxes / Cartons(standard: 100 / 500 / 1,000 pieces per bag) |

rubber o ring seals
NBR o ring
FKM o ring
EPDM rubber seal
AS568 standard o ring
metric o ring
silicone rubber o ring
high temperature o ring
oil resistant rubber seal
custom o ring sizes
fire extinguisher o ring
hydraulic seal o ring







