Why O Ring Series Play A Key Role In Household And Industrial Applications

 O-rings are very common in life, from small household appliances to large mechanical equipment. They seem to be inconspicuous components, but they bear important responsibilities.

What is an O-ring?
The cross section of an O-ring is a circular ring. It forms an elastic compression layer through extrusion to achieve a sealing effect on fluids (such as oil, water, gas) or dust. It is often used in axial and radial sealing structures. Its sealing principle is to use elastic compression and medium pressure to fill the interface gap and prevent medium leakage.

What materials are O-rings made of? Corresponding to various working conditions
Material Characteristics Temperature range Typical applications Shanfeng inventory status
Nitrile rubber (NBR) Good oil resistance, cost-effective −40℃ ~ +125℃ Hydraulic system, automotive oil seal Standard parts are available for immediate delivery, and large specifications are available in sufficient stock
Fluororubber (FKM) High temperature resistance, strong chemical corrosion −20℃ ~ +250℃ Chemical industry, engine cooling system Immediate delivery, fast response
Ethylene-propylene rubber (EPDM) High and low temperature resistance, weather resistance −40℃ ~ +125℃ Water pump, hot and cold water system, wind power generation interface Technology-enabled sealing optimization, on-site service
Silicone rubber (Silicone) Soft, high temperature resistant, food grade −60℃ ~ +225℃ Food equipment seals, high temperature scenes of motors High-tech enterprises guarantee quality
Hydrogenated nitrile (HNBR) Anti-oxidation, wear resistance, excellent low temperature performance −50℃ ~ +150℃ Ship, aviation, heavy truck hydraulic system Provincial specialized and innovative enterprise, customized processing capabilities
Different materials can meet the needs of different scenarios - many extreme working conditions, which also reflects the core competitiveness of Shanfeng's "full models, all in stock".

Product use: used for sealing piston rods in reciprocating hydraulic cylinders. Scope of application: TPU: general hydraulic cylinders, general equipment hydraulic cylinders. CPU: hydraulic cylinders for engineering machinery and high temperature and high pressure cylinders. Material: polyurethane TPU, CPU, rubber Product hardness: HS85±2°A Working temperature: TPU: - 40～+80℃ CPU: -40～+120℃ Working pressure: ≤32Mpa, working medium: hydraulic oil, emulsion.

O-rings have excellent sealing performance and long working life. The working life of dynamic pressure seals is 5-10 times higher than that of conventional rubber sealing products, and can reach up to dozens of times. Under certain conditions, it can have the same life as the sealing matrix.

O-rings have low friction resistance, and the dynamic and static friction forces are equal, which is 1/2-1/4 of the friction force of "0"-shaped rubber rings, and can eliminate the "creeping" phenomenon of low-speed and low-pressure movement.

O-rings are highly wear-resistant, and have automatic elastic compensation function after the sealing surface is worn.

O-rings have good self-lubricating properties. They can be used as oil-free lubricated seals.

O-rings have a simple structure and are easy to install.



O-ring working pressure: 0-300MPa; working speed: ≤15m/s; working temperature: -55-250 degrees.

O-rings are suitable for media: hydraulic oil, gas, water, mud, crude oil, emulsion, water-ethylene glycol, acid.

Although O-rings are small, they should not be underestimated. Shanfeng has been engaged in the sealing industry for 30 years and has accumulated enough experience. Tell us your needs and we will answer them for you.

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