Factors to consider when choosing silicone rubber O-ring seals

1. Working medium and working environment conditions

In the specific selection of O-ring sealing product materials, we should first consider whether the sealing medium is compatible when working. Also consider the sealing pressure, temperature, the length of the working time, operation cycle and other working conditions. If used in rotary seal, it is necessary to consider the temperature rise reaction caused by friction heat. Different sealing products use materials, physical properties and chemical changes are not the same.

2, sealed form

According to the load type, suzhou Lanxin silicone rubber O-ring can be divided into two types of seals: static seal and dynamic seal; According to the sealing purpose, it can be divided into three kinds of sealing products: hole seals, shaft seals and rotating shaft seals; According to the installation form can be divided into radial installation and axial installation. In radial installation, for shaft seals, the deviation between the inner diameter of o-ring products and the sealing diameter D2 should be as small as possible; For holes to be sealed, the inner diameter of the O-ring should be equal to or slightly less than the diameter d1 of the groove.

Axial installation, to consider the direction of pressure. When the internal pressure, o-ring outer diameter should be about 1 ~ 2 percent larger than the groove outer diameter D3; Under external pressure, the inner diameter of o-ring products should be about 1 ~ 3 percent smaller than the groove inner diameter D4.

With various sizes of o-ring and other sealing products, with guaranteed product quality and dedicated knowledge to serve customers in all industries, for users to solve the problems of various sealing solutions.