We bond PTFE and FEP Teflon using Aremco '526N epoxy adhesive. The Teflon must be etched before it will accept any bonding agent. Check the aremco.com website. -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] Sent: Wednesday, January 29, 2003 9:24 PM To: [log in to unmask] Subject: [TN] Adhesive for Teflon 'Morning, All This object of this problem is not a board, but a wave guide with a (PTFE?) teflon dome bonded to it - or at least to what looks like glass fibre cladding on the waveguide flange. The guide is pressurised to 28 p.s.i. at 1 atmosphere. Wall thickness of the dome is approx 10 mils. The flange that it's bonded to measures about 2.75" x 1.5" x 0.4" thick and there are traces of a yellow-coloured material, which I take to be the adhesive that bonds the teflon dome to the flange. I cannot be sure, though. The problem now is that the dome has separated from the flange along one side so that it can no longer be pressurised. It's a very expensive component, and worth repairing if possible. Does any one of you great folks know of an adhesive and method of application that would be effective in rebonding the teflon back onto the GF-coated flange? Obviously the adhesive must stick well to low-energy surfaces, but additonally it must have good tensile adhesion, since the internal pressure of the dome will tend to "peel" the rectangular wall away from the flange. Any help will be greatly appreciated. At present, components that have been 'punctured' like this are just thrown away and replaced with new ones, and there may be a very good reason for this - like it's not possible to remove the dome, clean it up and bond it back in place again, but I thought I would ask anyway. TIA Peter [This e-mail is confidential and may also be privileged. If you are not the intended recipient, please delete it and notify us immediately; you should not copy or use it for any purpose, nor disclose its contents to any other person. Thank you.] --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------