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When I re-did my interior a little over a year ago, I replaced the broken Field's door seal with the Cheap Bast$#d's specials. Everything seemed fine until I noticed a little water sneaking in during a flight through rain and an even worse issue with a sizable air leak during a recent cold snap we had. I don't think the Lowe's special seal is working out. I am just checking with the collective what owner's recent experience has been with the following: Knots2U door seals: http://www.knots2u.net/door-seal-entry-door-mooney-m20-series-ads-m1201/ Aircraft Door Seals, LLC (which ironically has the same picture and price as the Knots2U site): https://www.aircraftdoorseals.com/product/mooney/m20-series/m20-entry-door-seal/ Aircraft Spruce: https://www.aircraftspruce.com/catalog/appages/mooneydoorseals.php Bob Field's: http://ultimatedoorseals.com/index.html Brown Aircraft: http://www.brownaircraft.com/product-p/ba-706-m.htm I had a Bob Field's manual inflatable door seal for 25 years and really liked it. I just have not been able to get them to return my calls. Are they still in business?

We installed the new door seal on our M20C yesterday afternoon. We used the Knots2U seal based on what I read in @Marauder's New Door Seal thread. We bought their adhesive and remover. This evening we took her for a test flight with a short hop for a $100 enchilada plate and some cheap avgas. The new door seal is working better. The old HD seal was so poor that the front seat passenger shirt tail would get sucked out under the door. That doesn't happen any more. However... On final approach to our destination we noticed a baritone hum coming from the door. The pitch and intensity changed slightly with airspeed, and the sound became intermittent when encountering turbulence. Definitely a new sound, which means it is the door seal- that is all we have changed. On the trip back the noise was a bit louder- happening over a wider range of airspeeds, seems like whatever is vibrating is getting better at it. Upon landing, we inspected the seal and it is still adhered to the door. No obvious changes there. We installed it according to the instructions, which was to install the "L shaped" seal with the thick part adjacent to the a/c skin. Abut the door frame except near the hinge, when the seal shall be installed as near to the hinge as possible. The sound seems to be coming either from the area of the door hinge or maybe from the seal at the bottom of the door. Anyone dealt with this? I don't think that the seal is quite thick enough for our a/c. My guess is that the part of the L we installed by the hinge, that is not next to the skin or the door frame, is what is vibrating. My gut tells me to either backstop it with some intermittent beads of silicone, or thin HD door seal material. Please, somebody has to have troubleshot a solution for this issue already???

Has anyone tried this fuselage door seal? http://www.aircraftdoorseals.com/product/mooney/m20-series/entry-door-seal-fuselage-installation/

I've got a Bob Fields Door seal on my M20E that leaks. Anyone got experience with finding leaks and/or repairing them?