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This invention relates to a seal assembly for use in equipment in the electronics manufacturing industry that has a replaceable barrier to shield an elastomeric seal from direct exposure to a plasma. Commercially available seal and barrier shield assemblies comprise a bonded rubber seal and a continuous ring barrier that must be installed when the assembly is manufactured. Neither the bonded rubber seal, nor the barrier shield ring may be readily replaced in the
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This patent details a pipe coupling that uses an approximate 'W-section' seal which sits across the pipe joint. It is contained in an outer housing that surrounds the seal and clips into a groove close to the end of the two pipe sections.
low pressure seal and cured fast enough to permit an on-line 5.5 bar air pressure test. Typical shear strength (as indicated by ASTM D1002 and DIN 53283 tests) of the cured sealant is 5-12 N/mm21 Sealant 574 has WRC approval for use in water applications.
cost-effective. 'This new system means the machine's cutting capabilities are as accurate as ever while, at the same time, being more environmentally friendly,' says Robin Smoult of Diajet. 'And this means benefits for all concerned. So far prospects for the TCD2 000 are looking very promising.' 'Th
Pure graphite