Wide range of choices for a wide range of instruments and applications
Thermo Scientific ferrules are available in three different materials and various dimensions to match the instrument and capillary column ID. The choice of material is dependent upon the use.
15% Graphite/85% Vespel Ferrules
The mechanically robust 15% Graphite /85% Vespel ferrules have a long lifetime and are compatible with GC/ MS. These ferrules form a strong grip with the column and cannot be reused as they form a permanent seal with the column. They have a temperature limit of 350 °C, but must be re-tightened after initial temperature cycles.
100% Graphite Ferrules
Thermo Scientific 100% graphite ferrules are a soft material that is porous to oxygen, making them suitable for most applications except GC/MS interface connections. These easy-to-use ferrules form a soft grip with the column and provide a stable seal.
SilTiteâ„¢ Metal Ferrules SilTiteâ„¢
metal ferrules and nuts are made from the same material and have the same thermal expansion coefficient. The SilTite ferrule forms a strong, permanent, airtight seal around the capillary column, eliminating leaks. The base of the ferrule is flat and forms a perfect seal with the MS interface. The ferrule's temperature tolerance is well above the limit of the injector, MS interface or GC oven. Unlike other ferrules, SilTite Ferrules do not need re-tightening after installation.
All varieties of ferrules are supplied in contaminant-free, individual blister packs, allowing removal of an individual item without risk of contamination to the other supplied items.