Technetics Group

FELTMETALTM Abradable Seals - Airflow efficiency for compressors and engines Technetics Group FELTMETALTM Abradable Seal material provides superior clearance control in blade tip and labyrinth seal applications up to 1400F [760C]With 30 years and over 1, 000, 000, 000 hours of successful operation, it is no wonder that FELTMETALTM Abradable Seals have been adopted by major gas turbine manufacturers for flow path efficiency improvements.Technetics Group FELTMETALTM Abradable Seal material can be manufactured to virtually any size or thickness and can be rolled, formed, or machined to its final configuration.

Replacing labyrinth seals with brush seals from Technetics Group can reduce leakage by 5 to 17 times, thus providing significant turbomachinery efficiency and output gains.Brush seals work by absorbing the radial deflections between the shaft and rotor during transient operation. The seal then follows the rotor back to the steady state operating position to maintain minimum leakage. The brush pack is composed of thousands of finely packed 70 to 150 micron diameter wire bristles. The bristle material, a cobalt or nickel alloy, is selected to provide an optimal combination of wear properties and oxidation resistance. The backplates and sideplates are typically fabricated from stainless steel or nickel alloys. The primary consideration is thermal expansion and contraction of the case material.Technetics Group can manufacture brush seals from 2 inches to 110 inches in diameter. Brush seals can be delivered as a single unit or in multiple segments. The bristles can be configured radially inward, radially outward or axially.

Technetics Group offers time-saving solutions for demanding environments, including clamps, our KENOL products, and the Technetics Group Quick Disconnect System (QDS)Browse our Sealing Systems and Subassemblies Products below. For more information, contact Technetics Group.

Unlike flexible graphite cut gaskets, the compression of the ORIGRAF die-formed seal is limited by a mechanical stop: groove or inner andor outer ring. In the case of assemblies subject to extreme pressure andor temperature this design prevents application of an excessive seating stress on the seal during transients.To learn more about the ORIGRAF Graphite Seal, download our Flexible Graphite Seals Catalog, Request a Quote, or contact your Technetics Group Industry Representative.

Technetics Hydrodynamic (HD) seals increase the life and performance of propulsion engines, APUs, gearboxes, generators, pumps and other critical systems and components, especially at high altitudes. Technetics revolutionary Advanced Spiral Groove design, in-house manufacturing and testing process have advanced the performance of HD seals beyond industry expectations and standards. Technetics unique hydrodynamic code allows for improved modeling and management of coning and accurate prediction of performance at high altitudes.Made using various high-quality carbon grades, bronze and ceramics, HD seals are available in sizes ranging from 1 to 6 inches in diameter and can be used with both gasses and vapors or mist.Stringently tested for vibration and oil leakage at altitudes ranging from sea level to 40, 000 feet, Technetics Hydrodynamic seals are FAA approved and have demonstrated unprecedented performance, reduced maintenance, and increased operational efficiency over competitive products.