Rubber sealing ring how to pick up the best sealing effect
Hydraulic sealing ring primary seal used in static seal and reciprocating motion. When used for rotating seal, only in low speed inversion seal equipment. Rubber sealing ring common equipment in the outer circle and inner circle section within the rectangular groove on sealing effect of rubber sealing ring in the oil resistance, acid-base, grinding, chemical corrosion environment is still good sealing, damping effect. Therefore, O type rubber sealing ring is hydraulic and pneumatic transmission system used most widely used a seal.

   What is the main cause of failure of the rubber sealing ring :

   1, the permanent deformation of.2, the gap bite.3, distorted representation.

   Rubber sealing ring if installed properly, and the use of appropriate conditions, the common small and simple in the back and forth in the reciprocating motion of the attack roll, or distorted, due to the rubber sealing ring and the groove touch area is greater than conflict in sliding on the surface of the touch area and rubber sealing ring is its resistance to have been able to prevent distortion.The spread of the conflict also tend to adhere to the rubber sealing ring in the groove of the stop does not move, because the static conflict is greater than the sliding conflict, and the roughness of the surface roughness of the groove is not as plain as the roughness of the sliding surface.

   Selection of rubber sealing ring to pay attention to the selection of rubber sealing ring, the first to consider the following points:

1.Rubber sealing ring of the task situation: This is the rubber sealing ring for static sealing is still used for dynamic seal is sliding is still changing.

2.Mechanical task status: refers to the machinery is in contact with the task is still intermittent tasks, and should consider the length of each interruption, can have the impact load effect in the sealing parts.

3.The condition of the medium of the task: the task medium is liquefied or gas, and the physical and chemical properties of it are thought.

4.Work pressure: pressure size, maximum pressure fluctuation and shake frequency and the moment there.

   The sealing function request progress, now appeared again some other cross section shapes of kneading type sealing ring, these sealing ring of the principle of work and the O shaped circle similar, is also attributed to the kneading type seal, but change through the cross section shape of, improve the some features of the O-ring.