Hiltex Semi-Products has focused exclusively on the production of collars and discs for more than twenty years. Since the eighties, we’ve been a supplier to nearly all the major semiconductor producers and equipment manufacturers. Our products are simple to use and offer superior performance. They are easy to install and provide the best diffusion tube packing available.
Quartz collars and discs are made of 99.90% pure quartz fiber with very high strength, low thermal expansion and high elongation at the breaking point. Quartz collars and discs also have excellent resistance at high temperatures.
Quartz collars and discs are recommended for temperatures up to 1050ºC (1922ºF).
ALF collars and discs are made of continuous alumina-silica fiber consisting of 72% Al2O3 and 28% SiO2.
These collars and discs retain their strength and flexibility after operation in high temperature environments. Because they are boron-free products, there is no risk of negative effects resulting from the release of gases, including boron. By comparison, some competitive products contain boron and are, therefore, unacceptable for semi- conductor applications.
ALF collars and discs are recommended for temperatures up to 1395ºC (2543ºF).
ALF collars and discs are made of 7 micron fiber to ensure superior flexibility.