Home > VansAirForceForums

- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

Old 12-21-2009, 01:45 PM
Tumper's Avatar
Tumper Tumper is offline
Join Date: Dec 2007
Location: Aubrey, TX
Posts: 351
Default J B Weld vs. Pro-Seal

Can someone extol the virtues of Pro-Seal vs. J B Weld? I am repairing some small plastic parts (not sealing fuel tanks). What exactly is J B Weld?
Dean Eiland
Aubrey, TX
Former Vice President EAA Chapter 1246
RV-9 (yes) N369RV
Mattituck IO-360, C/S Whirl Wind Prop, GRT, Digiflight II, Garmin SL30 & GTX 330 and Hotel Whisky Aux tanks, Bla Bla Bla
Reply With Quote
Old 12-21-2009, 01:52 PM
G-force's Avatar
G-force G-force is offline
Join Date: Jun 2006
Location: Castaic, CA
Posts: 524

It is an epoxy based with powdered metal fillers. It dries hard so it is good for repairs where you need to fill a void and can be sanded, tapped, etc. But its very poor for anything flexable like plastic, it will just break away or crack. Proseal is more of a flexable, fuel resistant sealant. While it does act like an adhesive, its bond strenght is pretty low compared to a real adhesive. For your application, something rated for the type of plastic you are repairing will be better than either proseal or JBweld.
Mike Sumner
Castaic, Ca
2018 dues paid
Reply With Quote
Old 12-21-2009, 02:36 PM
az_gila's Avatar
az_gila az_gila is offline
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 9,752
Smile Try this stuff...

...which is available (or a very close equivalent) at Home Depot...


It's different since it will bond to ABS which most epoxies won't do.

It does have a short working time though....
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Reply With Quote
Old 12-21-2009, 02:40 PM
Captain_John's Avatar
Captain_John Captain_John is offline
Join Date: Jan 2005
Location: KPYM
Posts: 2,597

...or you could try Marine-Tex.

It is a 2 part structural compound that is designed for plastics... primarily fiberglass boats.

RV-7 Flying - 1,000 Hours in 4 Years!
TMX-IO-360, G3i ignition & G3X with VP-X
Reply With Quote
Old 02-13-2010, 04:09 PM
turbo's Avatar
turbo turbo is offline
Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
Posts: 2,997

my vote is for marine-tex. been using it for too many years to admit. can be mixed to be flexible or rock hard.
TURBO YES =VAF= Payed Jan2018
Ed D'Arcy
RV6-A 5,000+ hrs, R-44 1,600 hrs, Helicycle 320 hrs, gyro sold,35,000 miles flown in 2015
Stuart, Fl / S WINDSOR,Ct / Virgin Gorda, BVI
RV HOTEL LOCATION oct thru may.
Pain Free by Pete Egoscue= your answer to all your aches and pains. 'suffering is optional"
addicted pickle ball player
Reply With Quote
Old 02-14-2010, 07:27 AM
rv72004 rv72004 is offline
Join Date: Nov 2005
Posts: 452

As the marine environment is one of the toughest out there, I second most marine products [glues, fillers, sealers etc] to be good for aviation.
Have had good results with the marine products.
RV7 flying
xp360, CS, All Glass cockpit
Reply With Quote

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 08:44 AM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.