<html><body><div style="font-family: Arial; font-size: 12pt; color: #000000"><div><div>re: "...The plastic foil is on the bottom of the diaphragm opposite the stem ..."</div><div><br></div><div>That's where it's been on every old pump I've disassembled; the newer diaphragms I've bought didn't have it. I've always assumed the 'plastic foil' was mylar: <a class="Object" id="OBJ_PREFIX_DWT6457_com_zimbra_url" href="https://en.wikipedia.org/wiki/BoPET" target="_blank" tabindex="0" data-mce-href="https://en.wikipedia.org/wiki/BoPET">https://en.wikipedia.org/wiki/BoPET</a><br data-mce-bogus="1"></div><div><br></div>Bob</div><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Oudesluys" <coudesluijs@chello.nl><br><b>To: </b>josef-eckert@t-online.de, "Austin Healeys List" <austinhealeyslist@gmail.com><br><b>Cc: </b>"healeys" <healeys@autox.team.net><br><b>Sent: </b>Wednesday, November 23, 2016 4:05:07 AM<br><b>Subject: </b>Re: [Healeys] su pumps again<br><div><br></div>Sorry Joseph, but I have to disagree. The plastic foil is on the bottom <br>of the diaphragm opposite the stem, this is the pump and petrol side and <br>keeps the petrol away from the rubber parts.<br>Cheers,<br>Kees Oudesluijs<br><div><br></div><br>Op 23-11-2016 om 12:56 schreef josef-eckert@t-online.de:<br>> The rubber comes first to the petrol and the plastic foil is opposit on the magnet side of the pump.<br>> Josef Eckert</div></div></body></html>