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Firewall & bottom skin Pro-Seal

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ricksked(at)embarqmail.co
Guest

Posted: Sun Oct 07, 2007 7:25 pm Post subject: Firewall & bottom skin Pro-Seal

Gary,



I found the same thing confusing, later it tells you to use the high heat sealant but for the bottom, use proseal. My fix is was to use the high temp proseal from Van's made for selaing the firewall. I used it inside and outside at the relief cuts in the forewall and to make a nice seal around my Koolmat cover on the firewall.



Rick S.

40185

---

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jchang10

Joined: 05 Jul 2006
Posts: 227

Posted: Sun Oct 07, 2007 7:36 pm Post subject: Firewall & bottom skin Pro-Seal

Gary... i believe the main reason is the latter - seal out CO and other

possible combustion gases. i have seen reports of quite a pressure

gradient in other planes. higher forward and lower in the cabin, aft of

the firewall.



thus, for this purpose, proseal was good enough for me.



jae

40533

fuselage gear mounts



 	  Quote: 	
		   



 On Page 28-13 Step 2: â€œIt is recommended to use a thin layer of Pro-Seal

 between the firewall flanges and the fuselage skins.  Apply Pro-Seal to

 the lower flange of the F-1000A Firewall Bulkhead then cleco the Firewall

 Assembly to the F-1072 Fwd Fuse Bottom Skin as shown in Figure 1.â€



 With all the discussion in the past week about aluminum heat boxes in

 front of the firewall, as I read this step it got me to wondering, are

 they talking about the regular Pro-Seal or the high heat â€œFirewall

 Sealantâ€ available from Vanâ€™s?  In the steps, it doesnâ€™t say or I

 donâ€™t see any implication as to why they are suggesting the sealant.  Is

 it to hold the structure solid like the trailing edges of the wings, or is

 it to try to seal any engine fumes from making it into the cabin or ????



 --------

 Gary Blankenbiller

 RV10 - # 40674

 Fuselage SB

 (N410GB reserved)





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=138693#138693

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_________________
#40533 RV-10
First flight 10/19/2011
Phase 1 Done 11/26/2011

jeff(at)westcottpress.com
Guest

Posted: Mon Oct 08, 2007 8:25 am Post subject: Firewall & bottom skin Pro-Seal

Hi Gary,



I just asked Vans this same question.  Their response:  "We used tank  

sealant until we learned there was something better.  Now we use the  

high temp sealant."



Jeff Carpenter

40304

On Oct 7, 2007, at 8:11 PM, orchidman wrote:



 	  Quote: 	
		   



 On Page 28-13 Step 2: “It is recommended to use a thin layer of Pro- 

 Seal between the firewall flanges and the fuselage skins.  Apply  

 Pro-Seal to the lower flange of the F-1000A Firewall Bulkhead then  

 cleco the Firewall Assembly to the F-1072 Fwd Fuse Bottom Skin as  

 shown in Figure 1.”



 With all the discussion in the past week about aluminum heat boxes  

 in front of the firewall, as I read this step it got me to  

 wondering, are they talking about the regular Pro-Seal or the high  

 heat “Firewall Sealant” available from Van’s?  In the steps, it  

 doesn’t say or I don’t see any implication as to why they are  

 suggesting the sealant.  Is it to hold the structure solid like the  

 trailing edges of the wings, or is it to try to seal any engine  

 fumes from making it into the cabin or ????



 --------

 Gary Blankenbiller

 RV10 - # 40674

 Fuselage SB

 (N410GB reserved)





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=138693#138693

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orchidman

Joined: 10 Jul 2006
Posts: 277
Location: Oklahoma City - KRCE

Posted: Mon Oct 08, 2007 1:03 pm Post subject: Re: Firewall & bottom skin Pro-Seal

Thanks for the comments.  I suspected it was to seal the cabin from gases and that the normal pro-seal would work.  I hate opening a full High Temp Pro-Seal just for this.



Tomorrow evening is our EAA local chapter meeting and I am going to ask this of the 2 tech councilors that normally attend.  I need to confirm something one of them said some time ago about RED RTV.   I am going to ask about using the RED RTV as the sealant in this case.  It is cheaper, no mixing and no waist. 



Any one see a problem with this in this specific use?

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_________________
Gary Blankenbiller
RV10 - # 40674
(N2GB Flying)

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