Asbestos rubber gasket

2017-05-23 View Original

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This post was last edited by liudongday on 2017-5-23 at 15:30. Are asbestos gaskets no longer allowed to be used? Where are the regulations? There is an acetic acid off-gas scrubber (neutralized with NAOH at a concentration of about 15%); what material should be used for the gaskets? Operating conditions: atmospheric pressure, operating temperature of 30–50 degrees. Seeking help from fellow travelers.

Reply #2 2017-05-23

Both PTFE gaskets and metal-wound graphite gaskets work

Reply #3 2017-06-13

As asbestos is carcinogenic, its production is no longer allowed. If the flange is to be welded flat, it is recommended to use a modified polytetrafluoroethylene gasket; otherwise, a flexible graphite wound gasket should be used.

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Asbestos rubber gasket

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