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Sealing Concept

A large variety of the most difficult sealing problems can be solved using VITAFLEX spiral wound gaskets. Although its basic fundamental principle has little changed since its creation, production techniques and materials used developed over the last 30 years have enabled our gaskets to be adapted to a much broader range of applications.
Research and Development

Extensive research and development programs on the VITAFLEX spiral-wound gasket have enabled the essential parameters relating to the performance of the gasket to be mastered. This is particularly the case for the profile of the metal strip, choice of material, filler quality, gasket compactness, compressive force and seating pressure. We can offer optimized gaskets perfectly adapted to our customers specific requirements including operating conditions, sealing, dimensioning of assemblies and safety level.
Operating principle

The VITAFLEX; spiral-wound gasket operates by the axial compression of the winding, which results in the plastic deformation of the filler material on the sealing faces. The metal strip optimized profile provides elastic recovery, a vital function in order to maintain sealing on a bolted assembly.
Description

The winding, or the active part of the gasket, consists of an alternating combination of formed metal strip and soft filler material wound together. The soft filler material is selected to suit the medium which is to be sealed off (pressure, temperature, fluid). Several consecutive turns of the metal strip are welded together at the beginning and end of the winding in order to maintain the tension.
Main Applications

Chemical & Petrochemical Industry: catalytic synthesis, heat exchangers, vessel gaskets, piping, valves, and storage
Nuclear Industry: cooling systems, valves, manholes, handholes, and heat exchanger with or without partition walls
General Industry: high and low pressure steam systems, autoclaves, heat exchangers, heat transfer fluids, high pressure, hydraulic piping, valves, compressors and pumps

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.

Essential in sealing because of their outstanding performance, elastomeric seals developed by Technetics Group are multi-purpose solutions for critical static and dynamic sealing applications that can be designed for your technical specifications.
Discover our elastomer extruded profile seals, our BIO-GUARDIAN solutions, our plate seals and our fabric reinforced molded seals.
For more information about out Elastomer seals and sealing solutions, request a quote or contact a Technetics Group Industry Representative.

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.

Essential in sealing because of their outstanding performance, elastomeric seals developed by Technetics Group are multi-purpose solutions for critical static and dynamic sealing applications that can be designed for your technical specifications.
Discover our elastomer extruded profile seals, our BIO-GUARDIAN solutions, our plate seals and our fabric reinforced molded seals.
For more information about out Elastomer seals and sealing solutions, request a quote or contact a Technetics Group Industry Representative.

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.