Train epDM seal how to identify the quality?

    EPDM foam sealing strip, silicone foam sealing strip, PU foam sealing strip, foam sealing strip is molded by microwave vulcanization process, the surface is smooth and beautiful, no contact marks, has good elasticity and compression resistance, excellent aging resistance, excellent flame retardant performance, stable product performance, high dimensional accuracy. So how to distinguish the quality of the product? Analysis is as follows:

First, look at its color

Color, that is, look at the color of the rubber body, a lot of fake because of using is low, the quality of rubber, so the production of color often particularly ominous, in order to avoid has experience recognise a, most of them before leaving the factory, the black shoe polish on the oiled polishing processing, make it look black light. But the real epDM rubber produced by the rubber joint color is pure, slightly dull, not particularly bright or dark.

Smell it

In fact, taste is a good way to judge, because the ingredients of rubber contain ene, so rubber will have a pungent smell that normal people feel, but EPDM rubber is a polymer of ethylene and propylene, and it is a high filling material. So after vulcanization filled epDM rubber instead of ordinary rubber pungent taste, instead of a fragrant taste, so as long as the user pays attention to, it is not difficult to judge the real good goods.

Three, touch its sense

The feeling of touch, that is, you carefully rub the inner layer of the rubber body, there will be a fine feeling, because the authentic EPDM rubber is good in texture and expensive, so the rubber soft joint produced is especially smooth in touch, and ordinary rubber feels far away from touch, there will be a feeling of touching rough skin.