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01-19-2012, 06:16 AM
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#1
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Montana Master
Join Date: May 2005
Location: Fall Creek
Posts: 1,329
M.O.C. #3699
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Plastic Fittings Dope/Compound
Is there any thing besides the white Teflon tape than can be used on the plastic connectors on the Montana to ensure a good seal that will stay tight?
Thanks
__________________
Bob and Nancy Kassl Fall Creek, Wisconsin
2015 Montana 3440RL Legacy Edition, G614's, Pressure Pro TPMS, Dish Tailgaters
2016 GMC Sierra Denali 3500 CC SRW, Iridium Metallic, Duramax Allison Transmission
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01-19-2012, 06:22 AM
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#2
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Montana Master
Join Date: Aug 2007
Location: Waterford
Posts: 3,693
M.O.C. #7500
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Silicone.
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01-19-2012, 06:36 AM
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#3
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Montana Master
Join Date: Sep 2008
Location: Bangor
Posts: 770
M.O.C. #8816
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the way those connections work you shouldn't need anything. jmo. Teflon on the threads will help get it tighter, the tape acts as a lubricant on the threads. but remember teflon tape isn't a true sealer.
kevin
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01-19-2012, 12:22 PM
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#4
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Montana Master
Join Date: Jul 2006
Location: K.C.
Posts: 11,731
M.O.C. #5980
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I have used teflon impregnated pipe dope, but my favorite is Blue locktite thread sealant.
I don't like Teflon tape myself.
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01-20-2012, 08:42 AM
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#5
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Montana Master
Join Date: Apr 2009
Location: Murrieta
Posts: 5,816
M.O.C. #9257
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Long ago a plumber told me that teflon tape is not intended for plastic pipe fittings for the reasons mentioned that it acts like a lubricant and therefore shouldn't be used. Like Ozz mentioned, pipe dope should be good or nothing since many plastic threaded pipes are sorta self-sealing when tightened down. These have worked for me in the trailer and the stick house.
Tom, you mention silicon. What type or kind? I haven't heard of silicone being used as pipe dope, but I've used it successfully in adhesive or caulking applications.
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01-20-2012, 11:30 AM
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#6
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Montana Master
Join Date: Aug 2007
Location: Waterford
Posts: 3,693
M.O.C. #7500
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Art, I started using plain old clear silicone out of a squeeze tube on drains years ago. We had a double stainless sink installed in the kitchen that would leak whenever the large side was filled and the drain opened. I took the drain apart, cleaned it, re-tightened it to no avail. Then I wondered if silicone would work around the tapered plastic washer, and voila - no more leak. I don't use it if I don't need it, but if I do, I don't hesitate. BTW: when I hooked up our dishwasher, I found out that taking the drain apart wasn't a problem either, but I did clean off the old silicone and reapplied a new bead.
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01-20-2012, 01:45 PM
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#7
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Montana Master
Join Date: Jun 2004
Location: Benson
Posts: 3,121
M.O.C. #1658
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When we built our house I was having trouble getting a threaded fitting to seal for a pressure check. Tried twice with pipe dope and couldn't get it to seal. The plummer/inspector told me to clean it up and use some teflon tape, it worked.
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01-21-2012, 05:46 AM
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#8
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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Just to guide ones thinking ... if you're talking about pipe threads as in male tapered threads that screw into female taper threads, then teflon tape or pipe dope will assist in the sealing. It you're talking about most any other fitting on our Montanas as in the plastic tubing that pushes over the barbed fittings with a compression nut to hold it in place ... the threads on these fittings have no sealing purpose, so taping or doping them up won't do much for you. All the threads are for is to chinch up the compression nuts. Granted silicone may provide enough resistance to keep the nut from occasionally backing off, but it'll have nothing to do with the actual sealing. If you have a fitting that just won't seal, try cutting off only about 1 inch of the tubing and slipping it back over the fitting or in an extreme instance ... replace the fitting as the barbs are worn.
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