The following factors should be considered when selecting the O-ring seal:

1.Nature of sealing media: different materials have different suitable media, need to be selected according to the actual needs. For example, if the medium to be sealed is petroleum or solvent, then butyl rubber should be selected; if the medium to be sealed is high temperature or chemically corrosive substance, then fluorine rubber should be selected.

2.Working environment: Consider the working environment of the O-seal ring, such as temperature range, pressure range, and exposure to sunlight or ozone. These factors will affect the material selection of the O-ring seal.

3.Cost: the price of the O-shaped sealing ring of different materials is also different, so we need to choose the cost-effective products on the premise of meeting the requirements of use.

4.Installation method: different installation methods need to choose different materials, for example, if you need to install through the press way, then need to choose less hardness material, such as nitrile rubber; if you need to insert the installation, you can choose a large hardness material, such as polytetrafluoroethylene.

5.Service life: the service life of the O-shaped sealing ring of different materials is also different, so we need to choose the appropriate material according to the actual needs. For example, the service life of nitrile rubber is generally 5-10 years, and the service life of fluorine rubber is relatively long, generally about 10-20 years.

In short, in the selection of O-ring needs to be considered according to the actual needs, choose the appropriate materials and specifications to ensure the sealing effect and service life.

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