What is an O-ring?

The O-ring is a rubber seal with a prototype cross-section. Because its cross-section is O-shaped, it is called an O-ring. It can also be called an O-type rubber seal (circular rubber seal). It was first used in steam engine cylinder seals in the mid-19th century.

Because it is simple to manufacture, cheap, and has simple installation requirements, it is most commonly used for mechanical seals. It can be used for static seals or seals under moving conditions.

O-ring application range

An O-ring is a mechanical seal widely used in a variety of industries and applications. It is a circular ring made of elastic material that is used to compress between two surfaces to achieve a seal and prevent the leakage of gas or liquid. O-rings are an essential component of many machines and equipment as they provide a reliable, cost-effective sealing solution.

It plays a sealing role in static or moving conditions under specified temperatures, pressures, and different liquid and gas media. Various types of O are widely used in engineering machinery, construction machinery, mining machinery, machine tools, agricultural machinery, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, petroleum machinery, plastic machinery, forklifts and various types of hydraulic systems sealing element.

O-rings are mainly used for static sealing and dynamic seal.

For static seal applications:

• Used as radial static seals, such as seals for sleeves, sealing covers, pipes and cylinders;
• Used as axial static seals, such as seals for flanges, plates and end covers.
  
  When used for dynamic seal applications, due to speed and pressure restrictions, O-rings are only recommended for mild conditions, generally used for:

For dynamic seal applications:

Due to speed and pressure restrictions, O-rings are only recommended for mild conditions, generally used for:

• Seals for reciprocating pistons, piston rods and plungers under low load conditions;
• Seals for low-speed rotation or spiral motion on shafts, spindles and rotating power input shafts.
  

Application areas of O-rings

Industrial equipment

O-rings are widely used in various industrial equipment, such as machining centers, ships, cars, aerospace machinery and equipment, metallurgical equipment, machinery and equipment manufacturing, engineering machinery, construction engineering machinery, mining machinery and equipment, etc. In this equipment, O-rings are mainly used for static and dynamic seals to prevent liquid and gas leakage. Because O-rings have good pressure resistance and corrosion resistance, they can maintain sound sealing effects in harsh environments such as high temperatures and corrosion.

Oil and Gas industry

In the petrochemical industry, various pipes, valves, pumps, reactors and other equipment need to be sealed to prevent chemical leakage and corrosion. O-rings, as a common sealing element, are widely used in the petrochemical industry. Due to its good corrosion resistance and high-pressure resistance, it can effectively ensure the safety and reliability of equipment and instruments in the petrochemical industry.

Medical field

In the medical field, some medical devices and equipment also need to use sealing elements to ensure their cleanliness and sterility. For example, O-rings are used in medical devices and equipment such as infusion tubes, syringes, and vacuum devices. Because O-rings have good elasticity and recovery, they can effectively prevent liquid leakage and bacterial invasion, thereby ensuring the safety and reliability of medical equipment and equipment.

Other fields

In addition to the above fields, O-rings（How To Choosing ） are also widely used in power, electronics, communications, environmental protection and other fields. For example, in some electrical equipment and communication equipment, O-rings are used to prevent the invasion of external factors such as dust, water and gas, thereby ensuring the regular operation and stability of the equipment. In the field of environmental protection, some environmental protection equipment and instruments also need to use sealing components to ensure their reliability and safety, such as sewage treatment pipes and valves.