Brother introduces 10 new HSe-tubes The new range of HSe tubes offers an increased heat shrink ratio of 3:1, as well as brand new Black on Yellow tubes. They come in a different size than the previous HSe tubes and the series can now be used on cable sizes from 0.8mm to 20mm More about the new heat shrink tubes:• They are UL recognized as a component of UL224.• Continuous temperature rating: 125 C• Voltage rating 600V• Flammability rating: VW-1