Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-10-2020, 10:46 PM   #1
2 Rivet Member
 
martinez , California
Join Date: Jul 2015
Posts: 39
what sealant to use where black tank connects to dump plumbing?

Hello, I thought id ask here to see what is recommended to seal where black tank connects to dump plumbing? Ive attached a pic for reference.

Mine is leaking and its got some type of goupey sealant there now, maybe silicone, not sure.
Attached Thumbnails
Click image for larger version

Name:	20201110_193250.jpg
Views:	32
Size:	350.6 KB
ID:	382971  
jackvosney is offline   Reply With Quote
Old 11-11-2020, 04:46 AM   #2
Site Team
 
GCinSC2's Avatar

 
2007 30' Classic S/O
Somewhere , South Carolina
Join Date: Apr 2010
Posts: 5,771
Jack,

I just filed my paperwork for my been there done that certificate for valve R&R on my 2007. Yes, I searched etc and saw several "recommendations".

I called my AS dealer / repair shop and talked to a life long AS tech and posed the same question.

Butyl rubber adhesive sealant.

It was no a common item no local hardware or home center had it. I did find it at an RV dealership.

Feel the clean part of the exposed sealant, feels like chewing gum?

Gary
__________________
S/OS #001 2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Dexter 4 Piston Disc Brakes, Carslile Actuator, Equal-I-Zer, Dill TPMS. Campfire cook. BMV-712. DEMCO 21K Lb Cast Iron coupler
GCinSC2 is offline   Reply With Quote
Old 11-11-2020, 06:43 AM   #3
Rivet Master

 
2003 25' Classic
Houstatlantavegas , Malebolgia
Join Date: Jun 2007
Posts: 18,777
Images: 1
Welcome Aboard 👍

I used 3M 4520 Marine.
Semi permanent and made for wet environment sealing.
I've used 3m 4200 & 5200 on the AS for many years with good results.👍

POI...trying to seal it from the outside will be problematic, If you want to try I would consider 3m Extreme Sealing tape.........From Amazon.


Bob
🇺🇸
Attached Thumbnails
Click image for larger version

Name:	2627FC0C-06B0-4D9C-9998-BC7651C6F554_1_201_a.jpg
Views:	33
Size:	117.3 KB
ID:	382986  
__________________
Its the American Dream, but you have to be asleep to believe it.
George Carlin
ROBERT CROSS is offline   Reply With Quote
Old 11-11-2020, 10:03 AM   #4
2 Rivet Member
 
martinez , California
Join Date: Jul 2015
Posts: 39
Thanks Gary this is helpful. Did you separate the pipes and reseal? Or just apply new sealant to the outside?



Quote:
Originally Posted by GCinSC2 View Post
Jack,

I just filed my paperwork for my been there done that certificate for valve R&R on my 2007. Yes, I searched etc and saw several "recommendations".

I called my AS dealer / repair shop and talked to a life long AS tech and posed the same question.

Butyl rubber adhesive sealant.

It was no a common item no local hardware or home center had it. I did find it at an RV dealership.

Feel the clean part of the exposed sealant, feels like chewing gum?

Gary
jackvosney is offline   Reply With Quote
Old 11-11-2020, 10:07 AM   #5
2 Rivet Member
 
martinez , California
Join Date: Jul 2015
Posts: 39
Thanks Bob! I assume when you say sealing the outside would be problematic your are saying the better option is to separate the connection and apply sealant inside the joint like you would standard ABS plumbing correct?



Quote:
Originally Posted by ROBERT CROSS View Post
I used 3M 4520 Marine.
Semi permanent and made for wet environment sealing.
I've used 3m 4200 & 5200 on the AS for many years with good results.👍

POI...trying to seal it from the outside will be problematic, If you want to try I would consider 3m Extreme Sealing tape.........From Amazon.


Bob
🇺🇸
jackvosney is offline   Reply With Quote
Old 11-11-2020, 10:22 AM   #6
Site Team
 
GCinSC2's Avatar

 
2007 30' Classic S/O
Somewhere , South Carolina
Join Date: Apr 2010
Posts: 5,771
Jack,

In the R&R determined that one flange was not surviving. I wiggled the valve or for you looks like fitting and pulled, wiggled, pulled and it came out. If flange slip joint is reusable might be able to clean slip and tank and reinstall getting all lined up etc.

But hands on observations beat armchair guesses.

I let it cure overnight then filled with water and tested all joints etc.

Gary
__________________
S/OS #001 2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Dexter 4 Piston Disc Brakes, Carslile Actuator, Equal-I-Zer, Dill TPMS. Campfire cook. BMV-712. DEMCO 21K Lb Cast Iron coupler
GCinSC2 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
3/8" vs. 1/4" Propane Quick Connects larry9000 LP Gas, Piping, Tanks & Regulators 10 05-29-2018 02:03 PM
New OBDII reader connects your car to your phone andreasduess Tow Vehicles 0 03-03-2014 06:33 PM
this dump valve connects to...? Chuck Waste Systems, Tanks & Totes 3 08-31-2010 07:39 PM
Sealant for holding tank & dump fittings? wayner1239 Waste Systems, Tanks & Totes 8 04-06-2006 06:58 PM
Propane connects and regulators. raebaker06 Repairing/Replacing Floor &/or Frame 1 01-05-2005 11:40 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 08:09 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.