Rubber O-Ring
Our Rubber O-Rings are precision-molded circular seals engineered to provide reliable, leak-free performance in static and dynamic sealing applications. Manufactured to a torus (donut) profile, each O-ring seals by compressing between two mating surfaces — a groove and a mating part — creating a positive barrier against liquids, gases, dust, and other contaminants.
Available in a wide range of elastomer compounds, durometers, and standard or custom sizes (AS568 inch series and ISO 3601 / metric series), our O-rings are designed to withstand demanding operating conditions including high and low temperatures, pressure fluctuations, and exposure to oils, fuels, chemicals, and steam. Each ring is manufactured under strict quality control to ensure dimensional accuracy, consistent compression set, and long service life, making them a cost-effective and dependable sealing solution across a wide range of industrial, commercial, and consumer applications.
Whether used as a static seal in a flange joint or a dynamic seal in a reciprocating or rotating assembly, our O-rings deliver consistent performance, easy installation, and extended operational life — reducing maintenance costs and downtime.
| Parameter | Details |
| Shape | Circular cross-section (torus) |
| Standard Sizes | AS568 (inch series), ISO 3601 / DIN 3771 (metric series), custom sizes on request |
| Inner Diameter (ID) Range | 1 mm – 500 mm (custom sizes available beyond this range) |
| Cross-Section (CS) Range | 1 mm – 10 mm (standard); custom cross-sections available |
| Tolerance | As per AS568 / ISO 3601-1 Class A or B tolerance grades |
| Hardness (Durometer) | 40 – 90 Shore A (70 Shore A most common) |
| Available Materials | NBR (Nitrile/Buna-N), EPDM, Silicone (VMQ), FKM (Viton), FFKM (Kalrez-type), Neoprene (CR), Natural Rubber, PTFE-encapsulated, HNBR |
| Operating Temperature Range | -60°C to +260°C (-76°F to +500°F), material-dependent |
| Pressure Rating | Up to 35 MPa (5,000 psi) static; dynamic ratings vary by application and groove design |
| Compression Set | Low compression set for long-term sealing retention |
| Color Options | Black (standard); custom colors including red, green, blue, white available |
| Certifications/Compliance | FDA, NSF, WRAS, REACH, RoHS, USP Class VI (grade-dependent) |
| Sealing Type | Static and dynamic (reciprocating, rotary, oscillating) |
| Packaging | Bulk, bagged, or custom kit packaging with size/batch labeling |
| Material | Key Properties | Temperature Range |
|---|---|---|
| NBR (Nitrile) | Excellent resistance to oils, fuels, and hydraulic fluids | -30°C to 100°C |
| EPDM | Superior resistance to water, steam, ozone, and weathering | -50°C to 150°C |
| Silicone (VMQ) | High/low temperature flexibility, food and medical grade options | -60°C to 200°C |
| FKM (Viton) | Excellent chemical and high-temperature resistance | -20°C to 200°C |
| FFKM | Extreme chemical inertness for aggressive media | -10°C to 260°C |
| Neoprene (CR) | Good weather, ozone, and moderate chemical resistance | -40°C to 120°C |
1. Automotive – Engine seals, fuel systems, transmission components, braking systems
2. Aerospace – Hydraulic systems, fuel lines, actuators, landing gear assemblies
3. Oil & Gas – Valves, drilling equipment, pipeline connections, downhole tools
4. Chemical Processing – Pumps, reactors, piping systems handling aggressive media
5. Food & Beverage – Processing equipment, filling machinery, dairy and brewery systems (FDA/NSF-compliant materials)
6. Pharmaceutical & Medical – Infusion pumps, valves, diagnostic equipment, respiratory devices (biocompatible, sterilizable materials)
7. Hydraulics & Pneumatics – Cylinders, actuators, fittings, and fluid power systems
8. HVAC & Refrigeration – Compressors, valves, and refrigerant line connections
9. Electronics & Electrical – Enclosure seals, connector seals, waterproofing applications
10. Water Treatment & Plumbing – Pipe joints, meters, valves, and fittings
11. Marine – Pumps, propulsion systems, and below-deck sealing applications
12. Industrial Machinery – General-purpose sealing for pumps, gearboxes, and rotating equipment