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Rubber O Ring

A rubber O-ring, also known as a rubber seal ring or toroidal seal, is a circular-shaped mechanical gasket made from elastomeric materials. It is one of the most commonly used types of seals due to its simple design and effectiveness in creating a reliable, leak-proof seal.
Rubber O-rings are typically made from materials like natural rubber or synthetic compounds such as nitrile rubber (NBR), silicone rubber (VMQ), fluorocarbon rubber (FKM), or EPDM (ethylene propylene diene monomer). These materials offer excellent sealing properties, including flexibility, resilience, chemical resistance, and temperature resistance.

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Basic Info:

1.Raw-Material Brand: 

 DuPont (US) / Dow Corning (Germany) / Bayer (Germany) / 3M


AS558 Standard Size, Custom Size Accepted

3.Material Type: 

NBR / FKM / Silicone / EPDM / HNBR / ACM / Neoprene...etc.

4 Size: 

ID from 0.5MM to 1.5M and customize size was acceptable in different products

5.Products Application

Metallurgical, chemical, engineering, construction, mining, petroleum machinery


Black, white, red, green, or any customize


Temperature from -60° C to +220° C in different material

8.Factory Certificate

IATF 16949:2016, ISO9001, ISO14001 certificated

9.Product Certificate

KTW-W270/ Watermark/ LFGB / RoHs/REACH/FDA

Boman Rubber O Ring Advantages:

1. Effective Sealing: O-rings provide an excellent seal against fluid or gas leakage between two mating surfaces. They create a barrier that prevents the escape of liquids or gases and maintains the integrity of the sealed system.

2. Versatility: O-rings are available in a wide range of sizes, materials, and configurations to suit different applications and operating conditions. This versatility allows them to be used in diverse industries and environments.

3. Simple Design: The basic design of an O-ring is simple, consisting of a ring-shaped elastomeric material with a circular cross-section. This simplicity makes them easy to install, maintain, and replace.

4. Wide Temperature Range: O-rings can be manufactured from materials that provide excellent temperature resistance, allowing them to perform effectively in both high-temperature and low-temperature applications.

5. Chemical Compatibility: O-rings can be made from various materials that are chemically resistant to specific fluids or chemicals. This ensures that the O-ring will not degrade or swell when in contact with the intended substances.

6. Pressure Resistance: O-rings can withstand varying levels of pressure, making them suitable for applications with different pressure requirements, from vacuum systems to high-pressure hydraulic systems.

7. Dynamic and Static Sealing: O-rings can function as both static seals (when there's minimal movement between the mating surfaces) and dynamic seals (when there's relative movement between the surfaces). This adaptability makes them suitable for a wide range of applications.

8. Vibration and Shock Absorption: O-rings have a certain degree of flexibility that allows them to absorb vibrations and shocks, preventing leaks due to mechanical stress.

9. Cost-Effective: O-rings are generally cost-effective compared to more complex sealing solutions. Their simple design and wide availability contribute to their affordability.

10. Reduced Leakage Risk: O-rings provide a reliable and consistent seal, minimizing the risk of leaks and ensuring the safety and efficiency of systems.

Product Parameters:

Rubber O Ring

Rubber O Ring

Rubber O Ring

Rubber O Ring

Rubber O Ring Products Process Flow Chart: 

steps The process flow Process flow name Machinery and equipment/measuring equipment features Special features symbols note
product product
Rubber material visual / / /
IQC Hardness tester hardness /
Tensile machine Tensile strength / /
Tensile machine elongation / /
hydrometer The proportion of / /
Aging test chamber The compression permanent deformation / /
3 Mixing mixer / Material thicknessmm /
4             IQC rheometer TS2 / /
TS50 / /
TS90 / /
Hardness tester hardness /
5 Cutting edge
Cutting machine / Is long /
Material weight /

moulding 300 t hot molding machine, automatic monitoring
/ The molding pressure (kgcm2)
/ Molding time
/ Mold temperature
visual appearance / /
Hardness tester hardness /
The projector/caliper size /
7 IPQC visual appearance / /
Hardness tester hardness /
The projector/caliper size /
8 deflashing visual appearance / /
Automatic disassembly machine / speed /
/ time /
9 QC Scissors/knife appearance / /

steps The process flow Process flow name Machinery and equipment/measuring equipment features Special features symbols note
product process
10 FQC visual appearance / /
Hardness tester hardness /
The projector/caliper size /
11 cleaning Plastic basket / / / Manual cleaning
/ / /
/ / /
12 Post curing The oven / time
/ The temperature
13 Packing Electronic says Single - / /
Baling press The number of / /
The printer The labe / /
visual The cartons / /
14 OQC visual appearance / /
Hardness tester hardness /
The projector/caliper size /
visual check / /
visual weighing / /
15 Warehousing
transport cart Delivery note / /
Courier / /
Put in storage / /
note      1.“◇”Said inspection、“□”Said processing、“↓”Said handling、“△”Said storage、“▲”Said reworking/repairing
2.“★”Said product function and process of key special feature symbol;

Rubber O RingRubber O Ring

O Ring Applications:

O-rings are widely used in various industries and applications:

1. Automotive Industry: O-rings are used in engines, transmissions, fuel systems, brakes, and air conditioning systems to create seals that prevent fluid and gas leaks.

2. Aerospace and Aircraft: O-rings are found in aircraft engines, hydraulic systems, landing gear, and fuel systems to ensure reliable sealing in high-stress and variable conditions.

3. Hydraulic Systems: O-rings are used in hydraulic cylinders, pumps, valves, and connectors to prevent hydraulic fluid leaks and maintain system efficiency.

4. Pneumatic Systems: O-rings seal connections in pneumatic systems, preventing air leakage and ensuring consistent pressure levels.

5. Fluid Handling: O-rings are employed in pipes, valves, fittings, and pumps to prevent leaks in fluid handling systems, including water, oil, chemicals, and gases.

6. Manufacturing Equipment: O-rings are used in industrial machinery, such as presses, molding machines, and processing equipment, to prevent hydraulic fluid or coolant leaks.

7. Medical Devices: O-rings are used in medical equipment and devices, including pumps, valves, and connectors, to ensure sterile and leak-free conditions.

8. Appliances: O-rings are found in household appliances like dishwashers, washing machines, and refrigerators to seal connections and prevent water leaks.

9. Oil and Gas Industry: O-rings are used in oil rigs, pipelines, valves, and drilling equipment to maintain fluid containment and prevent leaks.

10. Water Treatment: O-rings are used in water treatment systems, such as filtration and reverse osmosis units, to prevent leaks and ensure efficient operation.

11. Food and Beverage Industry: O-rings are employed in food processing equipment to maintain hygienic conditions and prevent leaks in pipes, valves, and connectors.

12. Marine Applications: O-rings are used in marine engines, propellers, and pumps to prevent water leakage and maintain proper operation.

13. Chemical Processing: O-rings are used in chemical processing equipment to create seals that prevent leaks of corrosive or hazardous chemicals.

14. Instrumentation: O-rings are used in pressure gauges, sensors, and instruments to create a seal that prevents fluid or gas leakage.

15. Construction Equipment: O-rings are found in construction machinery like excavators, loaders, and bulldozers to prevent hydraulic fluid leaks.

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