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AVKO - Industrial Sealings and Insulations White Papers

AVKO - Industrial Sealings and Insulations

Packing FINISEAL® 8099 Н Tests and Analysis in Accordance to АРІ 622 The American Petroleum Institute (API) 622 August 2006 edit standard aims to specify the conditions for comparative tests of the packings used for steam valves where emission permeability is strictly observed.
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AVKOSEAL® - Cold Flow Resistant PTFE Sealing Tape It is well known that the standard PTFE, that does not have porous structure and is either moulded or extruded, has some bad mechanical characteristics such as very low tensile strength and low resistance to cold flow. The cold flow, especially when pressure is applied, is a particularly serious problem for standard PTFE seals because they tend to flatten under the stress which in time reduces their sealing efficiency. That is why, despite of its exceptional qualities, PTFE is mainly used in situations where high tensile strength and resistance to cold flow are not required.
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