Custom Mold Rubber Parts-An Overview of the O-Ring and Its Application

Have you ever heRubber O-Ringard of the O-ring? If not， you can read the following passage。 This article will tell you something about this ring。 The so-called O-ring is a kind of rubber seal ring whose section is circular。 Owing to its round section， it is called O-shaped seal ring or O-ring。 The main material for this ring is Buna-N rubber or fluorubber。 This ring is one of the common seal elements inRubber Seal the fluid pressure and gas pressure transmission system。 It is mainly used in the static seal and the alternative motion seal。 The applicable speed ranges from 0。005 to 0。3 meter per second。 In the normal situation， it is not so popular in the rotary motion seal equipment。 The O-ring is often installed in the groove。

Compared with other seal rings， the O-ring has the following unique features: (1) the structure is small and exquisite； (2) it is easy to install and remove； (3) the ring is applicable in the static and dynamic seals； (3) its friction drag is relatively small； (4) the single O-ring can play an important role in two directions´ seal； (5) its price is quite cheap； (6) it is applicable for different seal media， such as oil， water， gas， chemical medium and other mixed media； (7) its sealability is very reliable。

Now the article will introduce how to mark the O-ring。 It can be marked ad follow: inner diameter plus lead wire diameter。 For example， O-ring 20*2。4， GB1235-76。 Here 20 means the inner diameter of the great circle is 20mm。 2。4 means the section diameter of the rubber gasket is 2。4mm。 GB1235 refers to the standard number。 76 represents the standard year。 Therefore， when you buy the O-ring， you ´d better keep an eye on these numbers。

Generally speaking， the O-ring is mainly applied in the static seal and the alternating motion seal。 If it is used in the rotating motion seal， it will be limited by the seal equipment with low rotating speed。 On basis ofRubber Gasket the material of this seal ring， it can have the good seal effectiveness and at theRubber Parts same time it can reduce the shock in some harsh environments， such as chemical liquid， oil， acid liquid and so on。 Owing to its unique features， it is widely used in a lot of industries， such as machine tool， boat， automobile， metallurgical machinery， chemical machinery， engineering machinery， building machinery， plastics， agriculture and different instruments。

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