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How to recognize the quality of fire sleeve by naked eyes?
2020-02-19

We all know that the material of fire sleeve is made of high-purity alkali free glass fiber and coated with high-quality silicone rubber. Most of them are red on the market. ZBAO high temperature protection can make other colors (red, blue, yellow, black, other colors, etc.) according to the needs of customers.


So how can we tell good from bad? Let's discuss:

1.When we get a fire casing, we need to look at the surface structure of the fire casing. A good fire casing has a clean surface without any cracks, transparency and impurities; while a poor casing has uneven surface, pimples, bubbles and other impurities.

high temperature sleeve

2.After looking at the silica gel coating, you can see the internal glass fiber system, high-quality fire casing, the internal glass fiber system is neat, no messy glass fiber, most of the glass fiber is white, very few will be milky white, light yellow; while the poor casing, glass fiber system is loose and messy, glass fiber color is impure, there will be some impurities.


3.After seeing these appearances, you can smell the taste of the casing. The high-quality casing has no obvious pungent taste, while the low-quality casing has pungent taste. Long term inhalation will cause great harm to human body.


4.You can try to use the lighter fire spray gun to check. The long-term working temperature of the fire sleeve is 260 ℃, and the instantaneous temperature can reach 1650 ℃. Therefore, in the process of casing test, the poor fire sleeve will have a very pungent taste and melt instantly, while the high-quality fire sleeve, after 10-15 minutes of open fire combustion, the silica gel on the surface will carbonize, without obvious pungent taste, and the inner glass fiber is still intact, which is enough to distinguish the advantages and disadvantages of the fire sleeve.


high temperature sleeve

The above is the introduction of ZBAO fire sleeve. There are many types of protective casing manufacturers on the market, so we must pay attention to it when choosing!


If you have other questions or need to consult, you can choose online consultation or telephone consultation. Ningguo ZBAO Thermal Tubing Co., Ltd. will serve you 24 hours at any time!

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