O-type rubber ring seal referred to as O-ring, is a circular shape of the circular rubber ring. O-ring is the hydraulic, pneumatic system used in the most extensive seal. O-ring have good sealing performance, can be used for static sealing, can also be used for dynamic sealing; not only can be used alone, but also many of the basic components of the combination of sealing devices. Its use of a wide range, if the material selected properly, to meet a variety of media and various sports conditions. O-ring is a squeeze-type seal, squeeze-type seal of the basic working principle is to rely on the elastic deformation of the seal, the contact surface caused by contact pressure, contact pressure is greater than the sealed medium pressure, it does not occur Leak, and vice versa.
O-ring is installed in the groove, the amount of compressed O-section of the seal ring. O-ring is an effective and economical sealing element in a variety of dynamic or static sealing applications. Most of the standard is defined by the inner diameter d1 of the O-ring and the cross-sectional diameter d2.
Compared with other types of sealing elements, O-ring has many advantages:
A simple, integral trench design reduces parts and design costs;
B compact design, reduced part size;
C for a wide range of media, oil, water, all kinds of chemicals, air, all kinds of gases;
D installation is simple, reducing the cost of assembly and the risk of error;
E for a variety of occasions: dynamic seal, static seal, single or double role;
F A large number of standard sizes are available worldwide for spot, cost savings, easy maintenance and repair.
O-ring seal mechanism
The rubber seal is placed in the sealing groove and one or both sides are required to be sealed with the fluid medium. The elastic body compensates the gap by means of a variant (elastic or non-elastic), either as a "zero gap" or as a seal, by the mechanical pressure acting on the surrounding mechanical structure or by the pressure of the hydraulic fluid, The flow of fluid. The elasticity of the rubber compensates for the manufacture and coordination of the tolerances, and the elastic memory within the material is an important condition for maintaining the seal.
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