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Fuel Cell Sealant

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bernard.wilder2(at)gmail.
Guest

Posted: Sun Jul 14, 2013 10:51 am Post subject: Fuel Cell Sealant

Today I drained out some fuel from my Pulsar after the plane had not

been fired up for about seven weeks.



The fuel was a light amber color.



I assume that ethanol is beginning to dissolve the coating in the fuel cells.



What is the latest recommendation for fuel cell sealant that is

resistant to ethanol ? ? ? ?



Thanks in advance for the recommendations.



Benie Wilder



P.S. See Y'all  (( Or some of you. )) in Lawrence.

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mortweaver(at)sbcglobal.n
Guest

Posted: Sun Jul 14, 2013 5:43 pm Post subject: Fuel Cell Sealant

Look at PR1750 A & B with a pot life up to 4 hours and is brushable.  It is a polysulfide product that is more flexible than Jeffco and is highly rated for various chemicals including alcohol.  I just received a minimum order from Bergandal of 2 24 oz. kits.  I have to reseal a header tank on my 912XP.  The material is expensive.

Dave Weaver  N912GR

   From: Bernard Wilder <bernard.wilder2(at)gmail.com>

 To: Pulsar Net <pulsar-list(at)matronics.com> 

 Sent: Sunday, July 14, 2013 1:49 PM

 Subject: Pulsar-List: Fuel Cell Sealant

 --> Pulsar-List message posted by: Bernard Wilder <bernard.wilder2(at)gmail.com (bernard.wilder2(at)gmail.com)>

Today I drained out some fuel from my Pulsar after the plane had not

been fired up for about seven weeks.

The fuel was a light amber color.

I assume that ethanol is beginning to dissolve the coating in the fuel cells.

What is the latest recommendation for fuel cell sealant that is

resistant to ethanol ? ? ? ?

Thanks in advance for the recommendations.

Benie Wilder

P.S. See Y'all= the many List utilities such as List

- The Matronics Pulsar-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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paqs345(at)gmail.com
Guest

Posted: Mon Jul 15, 2013 6:40 am Post subject: Fuel Cell Sealant

PR-1750-A is the only flexible tank sealant that is advertised as

ethanol resistant. It is made by Able Aerospace, ph. 661 257 2500.

Because of its short shelf life it is made to order and is rather

expensive. When I bought some, it was $165 / qt but smaller quantities

are available. Other sealant is fairly ethanol resistant:



Jeffco 9700 (grey), gets very hard, only for tank structure, not for

sealing end plate

Dark purple, polysulfide elastic sealant (Chemseal CS 3204,  A-C-Tech

AC-236, PR-1440…., spec: AMS-S-8802)



Sonja

On 7/14/13, Bernard Wilder <bernard.wilder2(at)gmail.com> wrote:

 	  Quote: 	
		   

 <bernard.wilder2(at)gmail.com>



 Today I drained out some fuel from my Pulsar after the plane had not

 been fired up for about seven weeks.



 The fuel was a light amber color.



 I assume that ethanol is beginning to dissolve the coating in the fuel

 cells.



 What is the latest recommendation for fuel cell sealant that is

 resistant to ethanol ? ? ? ?



 Thanks in advance for the recommendations.



 Benie Wilder



 P.S. See Y'all  (( Or some of you. )) in Lawrence.

- The Matronics Pulsar-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Pulsar-List

gregsmi

Joined: 01 Jan 2011
Posts: 268
Location: Topeka, KS

Posted: Mon Jul 15, 2013 7:20 am Post subject: Fuel Cell Sealant

Bernie, hope you get the tank problem cured, it will not be a lot of fun.  You will have to devise something to reach all the way to the end of the tank to  spread the polysulfide. 

  

 Will you be driving out to Kansas or flying? That is one long drive. We are  starting to plan a year long trip in our motor home, starting in October with a  run to Texas. We plan to be on the east coast part of the winter, maybe Myrtle  Beach. Do you guys go south for the winter? It would be fun to meet up somewhere  in the warm climate.

  

 Anyway, sounds like you are doing well and in good health. Looking forward  to seeing you in Lawrence.

  

 Greg

  

  

  

  In a message dated 7/14/2013 3:32:35 P.M. Central Daylight Time,  bernard.wilder2(at)gmail.com writes:

  	  Quote: 	
		  -->    Pulsar-List message posted by: Bernard Wilder    <bernard.wilder2(at)gmail.com>



Today I drained out some fuel from my    Pulsar after the plane had not

been fired up for about seven    weeks.



The fuel was a light amber color.



I assume that ethanol    is beginning to dissolve the coating in the fuel cells.



What is the    latest recommendation for fuel cell sealant that is

resistant to ethanol ?    ? ? ?



Thanks in advance for the recommendations.



Benie    Wilder



P.S. See Y'all  (( Or some of you. )) in  the  ies  ay                 - MATRONICS WEB FORUMS               - List Contribution Web Site  p;                             



	


 [quote][b]

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PreCompTech

Joined: 29 Jun 2013
Posts: 16
Location: Scappoose, OR

Posted: Sat Jul 20, 2013 3:02 pm Post subject: Re: Fuel Cell Sealant

We use the Jeffco 9700 all the time for both 100LL and Jet fuel tanks. Never an issue.

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_________________
Kris Anderson, Owner
Precision Composites Technologies, LLC
509-521-7564
www.precomptech.com

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