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They appear to be stainless compression fittings found in plumbing
For the tubing you could use polycarbonate or borosilicate glass (McMaster-Carr) and use a couple of silicone O-rings in place of the metal compression ring.
Quote from: dak0415 on July 10, 2013, 12:52:34 pmFor the tubing you could use polycarbonate or borosilicate glass (McMaster-Carr) and use a couple of silicone O-rings in place of the metal compression ring.That's how my sight glass is constructed. I bought it from www.bargainfittings.com
Quote from: mtnrockhopper on July 10, 2013, 02:22:20 pmQuote from: dak0415 on July 10, 2013, 12:52:34 pmFor the tubing you could use polycarbonate or borosilicate glass (McMaster-Carr) and use a couple of silicone O-rings in place of the metal compression ring.That's how my sight glass is constructed. I bought it from www.bargainfittings.comThanks. If you get around to it, can you post a pic?
Quote from: hopsand on July 10, 2013, 02:28:16 pmQuote from: mtnrockhopper on July 10, 2013, 02:22:20 pmQuote from: dak0415 on July 10, 2013, 12:52:34 pmFor the tubing you could use polycarbonate or borosilicate glass (McMaster-Carr) and use a couple of silicone O-rings in place of the metal compression ring.That's how my sight glass is constructed. I bought it from www.bargainfittings.comThanks. If you get around to it, can you post a pic?It is this one. http://www.bargainfittings.com/index.php?route=product/product&path=45&product_id=194 Nice blurry pic here.https://plus.google.com/photos/104891953223854271066/albums?banner=pwa&gpsrc=pwrd1#photos/104891953223854271066/albums/5675788879184625729/5675788946867835554?pid=5675788946867835554&oid=104891953223854271066Edit: Another one. Still doesn't show you how it's constructed.https://plus.google.com/photos/104891953223854271066/albums?banner=pwa&gpsrc=pwrd1#photos/104891953223854271066/albums/5675788879184625729/5675789035934291154?pid=5675789035934291154&oid=104891953223854271066
Quote from: hopsand on July 10, 2013, 02:28:16 pmQuote from: mtnrockhopper on July 10, 2013, 02:22:20 pmQuote from: dak0415 on July 10, 2013, 12:52:34 pmFor the tubing you could use polycarbonate or borosilicate glass (McMaster-Carr) and use a couple of silicone O-rings in place of the metal compression ring.That's how my sight glass is constructed. I bought it from www.bargainfittings.comThanks. If you get around to it, can you post a pic?You mean like this?
You mean like this?
I guess it depends on where you are using it in your system, but polycarbonate is only good to 200oF. Borosilicate glass would be a better choice.