Brown Silicone O Ring seal
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.
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.
Representation of O-rings
GB1235-76 (discontinued)
Outer diameter D×wire diameter d2 . Implement the national standard GB1235-76
For example: O-ring 20*2.4, Ⅱ-2 In GB1235-76, 20 represents the outer diameter of the large ring is 20 mm, 2.4 represents the cross-sectional diameter of the rubber ring is 2.4 mm, Ⅱ-2 represents the type of rubber used, GB1235 represents is the standard number, and 76 represents the year the standard was published.
GB/T3452.1-2005
For example: O-ring 7.5×1.8-GN, in GB/T3452.1-2005, 7.5 represents the inner diameter of the large ring is 7.5 mm, 1.8 represents the cross-sectional diameter of the rubber ring is 1.8 mm, GB/T3452.1 represents the standard number , 2005 represents the year when the standard was published.
For example: O-ring 7.5×1.8-G-N,
7.5--Inner diameter d1
1.8--section diameter d2
G - series
N - grade
The material adopts the method of HG/T2579-2008
JB/T7757.2-2006
For example: O-ring 7.5×1.8-G-N,
7.5--Inner diameter d1
1.8--section diameter d2
G - series
N - grade
Material: P - nitrile rubber, E - EPDM rubber, etc.
International Standard for Rings
A=American Standard S568, B=British Standard BS1516, C=China C92 Standard, V.S.P.G=Japanese Standard, R=French Standard
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