How to choose reclaimed rubber for rubber seals?

Rubber sealing products have important applications in daily life, industrial production, transportation and other industries. In the sealing device, in order to prevent fluid or solid particles from leaking from adjacent joint surfaces, and to prevent foreign impurities such as dust and moisture from intruding into the machine and equipment, many factors need to be considered when selecting recycled rubber for sealing.

Recycled rubber hardness: The hardness of recycled rubber directly affects the sealing performance of recycled rubber seals. Generally speaking, the higher the hardness of recycled rubber, the better the wear resistance and sealing effect of the seal.

Compression permanent deformation: The sealing principle of the rubber seal is that the deformation of the compression section produces stress, and it is tightly combined with the contact surface to play a sealing role. It can be said that the seal is always in a compressed state. With the passage of time, the compression pressure of the seal will continue to decrease, which is manifested as compression stress relaxation; after the pressure is eliminated, the seal cannot return to its original shape, which is manifested as compression permanent deformation. Whether the sealing performance of the seal can be maintained for a long time depends on the compression performance of the reclaimed rubber.

Aging resistance: the better the aging resistance of recycled rubber, the longer the service life of the seal, especially in high temperature environments. High temperature will accelerate the aging of the seal, so the anti-aging performance of recycled rubber is particularly important.

Special performance: Seals in different environments need different special performances. For example, seals that work in oil for a long time need to have good zsj oil resistance, and seals used for chemical seals need to have strong chemical resistance. , Outdoor seals need to have good resistance to high and low temperatures. The selection of recycled rubber raw materials for rubber sealing should be based on the application situation to select the appropriate type of recycled rubber.

Choosing suitable recycled rubber products can not only reduce the raw material cost of rubber seals, but also ensure the quality of recycled rubber seals.