Black Rubber O Ring

Product Details

O-ring is a kind of rubber sealing ring with a circular cross-section. Because its cross-section is O-shaped, it is called O-ring rubber sealing ring, also called O-ring. It began to appear in the mid-19th century, when it was used as a sealing element for steam engine cylinders.

O-rings are the most common mechanical design for seals because of their low cost, simplicity of manufacture, reliable function, and simple installation requirements. O-rings are subjected to pressures of tens of megapascals (kilo-pounds). O-rings can be used in static applications as well as in dynamic applications where there is relative movement between components, such as shafts of rotary pumps and pistons of hydraulic cylinders.

O-ring specifications and standards

O-ring specifications and models mainly include UHSO-ring specifications, UHPO-ring specifications, UNO-ring specifications, DHO-ring specifications, piston rod O-ring specifications, high temperature O-rings, high-pressure O-rings, corrosion-resistant O-rings Rings, wear resistant O-rings.

The standard of O-ring mainly includes national standard GB 1235-76, national standard GB3452.1-92; Japanese standard P TYPE, G TYPE, S TYPE, SS/V TYPE, F TYPE; American standard AS568, British standard series; European standard series

O-ring technical requirements include appearance requirements, size requirements and material physical performance requirements.

Appearance requirements conform to GB/T3452.2-2007

Material requirements comply with HG/T2579-2008

The size requirements conform to GB/T3452.1-2005

The O-ring has excellent sealing performance and long working life. The working life of dynamic pressure seal is 5-10 times higher than that of conventional rubber sealing products, and can be up to tens of times. Under certain conditions, it can have the same life as the sealing base.

The frictional resistance of the O-ring is small, and the dynamic and static frictional forces are equal, which is 1/2-1/4 of the frictional force of the "0"-shaped rubber ring, which can eliminate the "crawling" phenomenon of movement at low speed and low pressure.

The O-ring is highly wear-resistant, and has an automatic elastic compensation function after the sealing surface is worn.

Good self-lubricating properties. Can be used as oil-free lubrication seal.

The O-ring has a simple structure and is easy to install.

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

O-ring applicable medium: hydraulic oil, gas, water, mud, crude oil, emulsion, water-glycol, acid.

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