Keywords
Citation
(2002), "High-integrity, metallic seal", Aircraft Engineering and Aerospace Technology, Vol. 74 No. 6. https://doi.org/10.1108/aeat.2002.12774fad.006
Publisher
:Emerald Group Publishing Limited
Copyright © 2002, MCB UP Limited
High-integrity, metallic seal
High-integrity, metallic seal
Keywords: Sealing, Metals, Materials
Garlock Sealing Technologies has introduced a new metallic seal designed to meet the demanding requirements of the semiconductor, ultra-high vacuum, space and nuclear industries. A joint development with CEA, the French Atomic Energy Commission, the Ultra-Flexe seal design reportedly achieves a high sealing tightness of 1l0−9 cc/sec, with clamping pressures equivalent to that of elastomeric seals.
Ultra-Flex has an open “C” cross-section manufactured from an exterior metal sealing material – gold, aluminium, silver or copper, depending on the application – formed over an internal metallic core of Inconel. On loading the seal during assembly, two opposing offset ridges on the sealing face move into the optimum position as the “C” section deforms (Plate 6).
The metallic composition of Ultra-Flex is said to provide benefits over elastomer seals including high and low temperature resistance, zero outgassing, reduced contamination and wider chemical resistance.
Ultra-Flex is available in a wide range of sizes and materials either from stock or manufactured to customers specifications.
Details available from: Garlock (Great Britain) Ltd, Tel: +44 (0) 1422 313600; E-mail: stuart@garlockgb.co.uk
Plate 6
New high-integrity, metallic seal design achieves high sealing performance
with low seating load