How to distinguish between high-quality high-temperature resistant fireproof conduits and inferior o

How to distinguish between high-quality high-temperature resistant fireproof sleeves and inferior ones?

Fireproof sleeves are high-temperature protective sleeves widely used to protect cables, pipelines, and hydraulic

equipment in high-temperature environments. They are an essential material in modern high-temperature industries.

As everyone knows, fire-resistant sleeves are made of high-purity, alkali-free glass fiber with a high-quality silicone

rubber coating on the outer layer. Most available on the market are red, but other colors can be adjusted according to

customer needs. The following are some distinctions compiled by Antuo High-Temperature Protection Department

for your reference when purchasing.

First, once you have a fire-resistant sleeve, the first thing to check is the silicone coating on its surface. A high-quality

fire-resistant sleeve has a smooth surface with no pimples, bubbles, cracks, scratches, or impurities. A poor-quality

surface is uneven, with pimples, bubbles, and other impurities.

Next, look at the silicone coating and the inner glass fiber weave. In a high-quality fireproof sleeve, the inner glass fiber

weave is clean and orderly, with most fibers being white, and some slightly milky or pale yellow. In contrast, poor-quality

sleeves have loose, messy glass fiber weaving, with impure colors containing impurities.

After checking the construction, you can notice the smell of the sleeve. High-quality sleeves have no pungent odor,

whereas inferior ones have a strong odor which can be harmful to human health with prolonged inhalation.

Finally, you can test it with a lighter flame. The long-term working temperature of fireproof sleeves is 260°C, and the

instant temperature can reach 1650°C. During testing, low-quality fireproof sleeves emit a strong pungent odor and melt

immediately, while high-quality sleeves will char on the surface after 10-15 minutes under open flame, emitting a mild

odor, while the internal glass fibers remain intact. This is enough to distinguish the quality of fireproof sleeves.

Note: High-quality fireproof sleeves can fully protect pipelines, hydraulic equipment, and other devices during high

temperatures or direct flames, ensuring safety and normal use. In contrast, poor-quality sleeves can lead to unmeasurable

damage during fires and other hazards. When choosing fireproof sleeves, select the appropriate product.