The Murphy Builders Site

Hi All,
After a very long hiatus, Victor and I are starting to build our Rebel again. I'm currently trying to track down the chemicals I need. I'll post a separate question about the primer but first the fuel tank sealant. I have tracked down a supplier for PRC Pro-Seal and another for FlameMaster. The FlameMaster is cheaper but not by much. The choices I have are (all Class B2):

PRC PS890
PRC PR1440
PRC PR1442, and
FlameMaster

So, does anyone have any experience with FlameMaster? Is it just as good as PRC and if PRC is the one I should use, which of the 3 PRC products is appropriate?

Thanks
Philip

TongueTied wrote:Hi All,
After a very long hiatus, Victor and I are starting to build our Rebel again. I'm currently trying to track down the chemicals I need. I'll post a separate question about the primer but first the fuel tank sealant. I have tracked down a supplier for PRC Pro-Seal and another for FlameMaster. The FlameMaster is cheaper but not by much. The choices I have are (all Class B2):

PRC PS890
PRC PR1440
PRC PR1442, and
FlameMaster

So, does anyone have any experience with FlameMaster? Is it just as good as PRC and if PRC is the one I should use, which of the 3 PRC products is appropriate?

Thanks
Philip

Hi Philip

We have used the Flamemaster materials and have been satisfied with the results. I believe the materials that meet the same MIL-SPECs are considered interchangeable.

These:

http://www.crlaurence.com.au/crlapps/sh ... delID=3114

are great for dispensing the material where you want it with less mess than popsicle stick/tongue depressors, just mix up a batch and pop it in the tube.

Dave
Elite583

Thanks everyone. I've gone and picked up some FlameMaster. Since the distributor is 10 minutes down the road, it makes it much easier than ordering from Victoria...and paying twice as much for the PPG Proseal.

One further question for you about this stuff. Should I store it in the fridge or the freezer?

I kept ours in a cool place. Not too hard up here in AK. A fridge would probably be good. I did put mixed compound in the freezer for I think, 2 days and it was still okay. That was blessed by the manufacturer. One more note, when I expressed concern to MAM about expired proseal (ours was flamemaster), they said not to worry. The date was for certified work and that the stuff was still good. I think it was about a year out of date and I was glad because it wasn't cheap. There are things yo don't want to go out and buy until you need them, I guess. Anyhow, no leaks so I guess it was just fine.

snowyriver wrote:One more note, when I expressed concern to MAM about expired proseal (ours was flamemaster), they said not to worry. The date was for certified work and that the stuff was still good. I think it was about a year out of date and I was glad because it wasn't cheap.

I still have an unopened tin of proseal that came with my Rebel but it is now 18 years out of date! So, I don't think is is usable anymore.

Freezer is best...... but don't keep in with your food. I made that mistake once, but my wife corrected me and now I never forget.

I've had cans in a very cold shop fridge for over a decade that still work just fine. I only use those for floats and such, but they seem to set up just fine. Just be sure to take your cans out at least a full day before you want to use them and be sure to stir the activator well before measuring it out 10 to 1 by weight.

Lockheed keeps theirs in a chest freezer until used. Dale is right, no food ( might taste like a microwave dinner after being in the same freezer )

Curtis

I don't have any personal experience with this stuff yet, but perhaps Ziploc freezer bags - if you can find one big enough - would alleviate the need for a Pro-Seal-only freezer?

TongueTied wrote:Hi All,
After a very long hiatus, Victor and I are starting to build our Rebel again. I'm currently trying to track down the chemicals I need. I'll post a separate question about the primer but first the fuel tank sealant. I have tracked down a supplier for PRC Pro-Seal and another for FlameMaster. The FlameMaster is cheaper but not by much. The choices I have are (all Class B2):

PRC PS890
PRC PR1440
PRC PR1442, and
FlameMaster

So, does anyone have any experience with FlameMaster? Is it just as good as PRC and if PRC is the one I should use, which of the 3 PRC products is appropriate?

Thanks
Philip

Phil it's the same stuff I might suggest ordering a B4 compound tho, it gives you a 4 hour working time vs. 2 hours and as pricy as the stuff is you need the extra time to work with it especially the fuel tanks, also freezing it prolongs the shelf life, just and fyi have plenty of sergi-gloves handy along with solvent and rags,

Phil,
I used the proseal B-2 worked great. Remember for every 10 degrees above 70 it cuts the cure time in half. I did the top skins at 84 degrees so it was a little less fun..... Also keep some spray lube handy for the jaws of your rivet gun some of the proseal will get on the rivet stems and into your gun. Just Remember to disconnect the air hose if you have to clean the jaws of the gun.
At work I use B-1/2 and B-2 to seal connections for the generator ground and cowl door grounds. Both go on the same, for our tanks the longer cure time is definately better.

Curtis
175R