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Gas Cap "O" Rings

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Fred.Stucklen(at)UTCPower
Guest

Posted: Tue Nov 04, 2008 5:33 am Post subject: Gas Cap "O" Rings

Listers,

  

    I'm looking for a source of gas cap "O" rings that are low temperature  equivalents to the 

 Brown  "O" rings that are supplied with kits and new gas caps. 

    The brown variety that Van supplies do not  work well in temps  below 15* F.. At low 

 temps,  the gas cap is impossible to remove. The brown "O" ring seems to not  contract

 and  allow the gas cap to be lifted.

     Years ago I found a local "O" ring source, but it  has since gone out of business... Does

 anyone  have another source?

    

  

 

Fred  Stucklen 

RV-7A  N924RV  75 Hrs  [quote][b]

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wdleonard(at)gmail.com
Guest

Posted: Tue Nov 04, 2008 5:48 am Post subject: Gas Cap "O" Rings

Try McMaster Carr.  They have a large selection of o-rings in a variety of materials.



Dave Leonard



On Tue, Nov 4, 2008 at 5:32 AM, Stucklen, Frederic W      UTPWR <Fred.Stucklen(at)utcpower.com (Fred.Stucklen(at)utcpower.com)> wrote:

  	  Quote: 	
		       Listers,

  

    I'm looking for a source of gas cap "O" rings that are low temperature  equivalents to the 

 Brown  "O" rings that are supplied with kits and new gas caps. 

    The brown variety that Van supplies do not  work well in temps  below 15* F.. At low 

 temps,  the gas cap is impossible to remove. The brown "O" ring seems to not  contract

 and  allow the gas cap to be lifted.

     Years ago I found a local "O" ring source, but it  has since gone out of business... Does

 anyone  have another source?

    

  

 

Fred  Stucklen 

RV-7A  N924RV  75 Hrs   	  Quote: 	
		  



	


	


-- 

David Leonard



Turbo Rotary RV-6 N4VY

http://N4VY.RotaryRoster.net

http://RotaryRoster.net

   [quote][b]

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Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Tue Nov 04, 2008 6:04 am Post subject: Gas Cap "O" Rings

The O-rings should be MS29512 series, for static applications with 

hydocarbon fuels, made to Mil-P-5315 spec, which are rated for -65 to 

+200 degrees, and black in color. I don't know what material Van uses.



David Leonard wrote:

 	  Quote: 	
		   Try McMaster Carr.  They have a large selection of o-rings in a 

 variety of materials.



 Dave Leonard



 On Tue, Nov 4, 2008 at 5:32 AM, Stucklen, Frederic W UTPWR 

 <Fred.Stucklen(at)utcpower.com <mailto:Fred.Stucklen(at)utcpower.com>> wrote:



     Listers,

      

       I'm looking for a source of gas cap "O" rings that are low

     temperature equivalents to the

     Brown "O" rings that are supplied with kits and new gas caps.

        The brown variety that Van supplies do not work well in temps

     below 15* F.. At low

     temps, the gas cap is impossible to remove. The brown "O" ring

     seems to not contract

     and allow the gas cap to be lifted.

         Years ago I found a local "O" ring source, but it has since

     gone out of business... Does

     anyone have another source?

      

      



     *Fred Stucklen* 

     RV-7A  N924RV  75 Hrs



     *



     *





 -- 

 David Leonard



 Turbo Rotary RV-6 N4VY

 http://N4VY.RotaryRoster.net

 http://RotaryRoster.net

 *



 *

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

rv9jim(at)juno.com
Guest

Posted: Tue Nov 04, 2008 6:23 am Post subject: Gas Cap "O" Rings

Hi Fred,

        I sell O-Rings at my shop (all kinds).  The Viton (available in

brown or black) is rated from -65*F to +500*F.  The best reason for the

brown version is to avoid confusion of materials.  All the rest of the

O-Rings are black and hard to tell the difference in materials.  Such as

Buna, Butyl, Ethylene Propylene.  So the brown helps.  Any material at

the temps of around 15*F and lower are going to be stiffer than at higher

temps.  I use a wooden dowel (with calibrations at 5-10-15 gallons) with

a steel pin (nail with out head) inserted on one end.  I use it to lift

the lock on the cap.  At that point, you grip the cap and lift.  If it

comes out with a lot of effort, I would make up a device to "hook" on to

the cap to pull it from the tank.

        Is that confusing enough??



Jim Nelson

RV9-A

____________________________________________________________

Click here and choose from thousands of high quality used cars.

http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3oE0bmQByYhqqwhMEsVvhS8QRLDS76yF8shf0JT9u8UggS19/

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rmkeith(at)gwi.net
Guest

Posted: Tue Nov 04, 2008 4:48 pm Post subject: Gas Cap "O" Rings

The o rings are 2-325 viton-75 a softer compound  might help. Buna-N is also an acceptable compound and can be found with a  Shore hardness of 70.

  

  

 Russ Keith

 RV9A    90%DONE $10,000 left to go I  think

 [quote]   ---

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ceengland(at)bellsouth.ne
Guest

Posted: Tue Nov 04, 2008 5:24 pm Post subject: Gas Cap "O" Rings

Stucklen, Frederic W UTPWR wrote:

 	  Quote: 	
		   Listers,

  

   I'm looking for a source of gas cap "O" rings that are low 

 temperature equivalents to the

 Brown "O" rings that are supplied with kits and new gas caps.

    The brown variety that Van supplies do not work well in temps below 

 15* F.. At low

 temps, the gas cap is impossible to remove. The brown "O" ring seems 

 to not contract

 and allow the gas cap to be lifted.

     Years ago I found a local "O" ring source, but it has since gone 

 out of business... Does

 anyone have another source?

  

  



 *Fred Stucklen* 

 RV-7A  N924RV  75 Hrs




	


I'll pass on a tip someone else gave me:



http://allorings.com/



The size is 2-325 (1 7/8" ID) in Buna-n.



They will sell a bag of 10 for $10, but the assortment on the primary 

web page includes something like a half-dozen of that size plus a LOT of 

other sizes in a nice box, p/n 70D, for the same price. Total with 

shipping is around $20. I've been using a pair & running autogas for 

about a year with no ill effects (originals swelled up badly on autogas).



YMMV, etc etc.



Charlie

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ghinman(at)mts.net
Guest

Posted: Wed Nov 05, 2008 6:34 am Post subject: Gas Cap "O" Rings

Fred

      At low temps,Lift the lock of the gas cap and let it sit

for 15min or so,befor removing the cap.

    The ring will have time to relax making it easier to remove.



-- 



George H. Inman

ghinman(at)mts.net

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chaskuss(at)yahoo.com
Guest

Posted: Wed Nov 05, 2008 8:10 am Post subject: Gas Cap "O" Rings

Buna N will work fine with 100LL, but Viton is a better choice, if you plan on using Auto Fuel. The additives in unleaded auto fuels will cause Buna N (aka Nitrile) to shrink over time.

Charlie Kuss

--- On Tue, 11/4/08, Russ & Marilyn <rmkeith(at)gwi.net> wrote:



[quote] From: Russ & Marilyn <rmkeith(at)gwi.net>

 Subject: Re: Gas Cap "O" Rings

 To: rv-list(at)matronics.com

 Date: Tuesday, November 4, 2008, 7:44 PM

 The o rings are 2-325 viton-75 a softer compound might help.

 Buna-N is also an acceptable compound and can be found with

 a Shore hardness of 70.

 

 

 Russ Keith

 RV9A    90%DONE $10,000 left to go I think

   ---

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