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In sealing industry, rail transit sealing strip according to material and use can be divided into a lot of kinds, actually for sealing strip, in addition to the sealing performance, the most important thing is the length of service life of the sealing strip. Many traders buy seal or terminal, sealing strip the choose and buy when considering above all is the performance of the sealing strip itself, the second is about to consider the service life of sealing strip, if the installation of the sealing strip can't use how long will be aging, that the sealing strip is a substandard sealing strip, for the consumer also is very bad, often change the sealing strip is a time-consuming, laborious and expensive things. So before sealing strip of choose and buy when, in addition to the performance of the sealing strip itself, is to consider the length of service life of the sealing strip. Next, introduce the reader to an aging resistance good sealing strip.
Velocity and how to slow down the destruction of seal products as follows: on the surface of seal ring to form a protective layer, when using, from the hydraulic oil seal products. Make molecules into the material at a slower pace. Extend the service life of the sealing products accordingly. How to prevent loss of seal coating outside, must be based on the work of raw materials to add dozens of kinds of additives, the additive into polyurethane molecules. As sealing products using the extension of time, the additive from polyurethane intramolecular slowly permeate to the surface, the surface form a protective layer for a long time. Thus solve the aging of polyurethane material, solved the sealing products corresponding technical difficult problem.
Part of material modification is the key of seal products offer. It directly reflects the internal quality of materials, can produce the sealing ring shape is very beautiful, but not every producer internal quality is able to grasp core technology.