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2022

What do you need to consider when choosing an imported rotary seal ring?

When selecting imported rotary seal ring, its tensile strength, constant tensile stress, elongation, elongation at break, long-term fracture deformation, stress-strain curve, etc. should be considered first. These are collectively referred to as tensile strength. Tensile strength is actually the larger tensile stress when the sample is destroyed by tensile force. Constant elongation stress is the stress reached at specific elongation. Elongation is the deformation caused by tensile stress, expressed as a percentage of the ratio of the elongation increment to the original length, the elongation at break is

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Select ImportRotating seal ring, its tensile strength, constant tensile stress, elongation, elongation at break, long-term fracture deformation, stress-strain curve, etc. should be considered first. These are collectively referred to as tensile strength. Tensile strength is actually the larger tensile stress when the sample is destroyed by tensile force. Constant elongation stress is the stress reached at a specific elongation. Elongation is the deformation caused by tensile stress and is expressed as a percentage of the ratio of elongation increment to original length, the elongation at break is the elongation at break. In addition, we also need to consider the basic performance of the hardness of the sealing ring. The hardness is the performance of the rubber's ability to resist external pressure. The hardness of the rubber is partly related to other properties, such as high adhesive hardness, high strength, low elongation, and wear resistance. Good, poor low temperature resistance, high hardness rubber can resist extrusion and damage under high pressure. Therefore, the appropriate hardness should be selected according to the working characteristics of the parts.

As we all know, the choice of rotating sealing ring material is of great significance to its sealing performance and service life. The performance of the material directly affects the performance of the sealing ring. In addition to the general requirements for rotating sealing ring materials, imported O-rings should also pay attention to the following conditions:

(1) elasticity and elasticity;

(2) Appropriate mechanical strength, including expansion strength, elongation and tear strength.

(3) Stable performance, not easy to expand in the medium, and small thermal shrinkage effect (Joule effect).

(4) It is easy to process and form, and can maintain accurate dimensions.

(5) Do not corrode the contact surface and contaminate the medium.

1. Before installing the rotating sealing ring, look at both sides clearly. Don't get the wrong direction. It will destroy the lips. If there are scars on the lips, it may cause obvious oil leakage.

2. To prevent forced installation, you cannot knock it in with a hammer. Before installation, it is recommended to read the instruction manual. When installing, you should first apply lubricating oil on your lips to facilitate installation.

3. To prevent expired use, the service life of the rubber sealing ring is generally 5000 hours, so the new rubber sealing ring should be updated in time.

　　4Do not use the old rubber sealing ring. When using a new sealing ring, carefully check its surface quality to ensure that there are no holes, bumps, cracks, grooves, etc., and ensure sufficient elasticity before use.

Key words:

Rotating seal ring