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  #1  
Old 08-22-2018, 01:16 AM
mbauer mbauer is offline
 
Join Date: Nov 2015
Location: Nikiski, AK
Posts: 252
Default Such A Thing As Lube For the O-Ring on the Fuel Cap?

My fuel caps are getting harder and harder to remove and then put back. When I first purchased my RV-6 it had some kind of "product" that seemed to help, now that stuff is acting like a glue.

Is there a lube of some kind that I can use to stop the O-rings from sticking?

Or best to buy new O-rings and clean the cap of all residue?

Caps are in great shape, except for the O-rings sticking when trying to fuel...

Best regards,
Mike Bauer
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2018 Dues Paid

Last edited by mbauer : 08-22-2018 at 01:26 AM.
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  #2  
Old 08-22-2018, 02:19 AM
rv8or rv8or is offline
 
Join Date: Oct 2007
Location: Norwich England
Posts: 138
Default Chapstick

I use lip salve chapstick, works well.

Rob
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  #3  
Old 08-22-2018, 05:38 AM
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DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
Posts: 8,006
Default

The mystery product is probably EZ Turn or some other brand of fuel lube:

http://www.aircraftspruce.com/catalo...?clickkey=9406

Dismantle the caps, remove all the old lube, re-lube the o-rings sparingly, assemble and readjust the caps. Don't need new o-rings unless they are somehow cracked or damaged.

I like the chapstick idea. EZ Turn is sticky.
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  #4  
Old 08-22-2018, 05:50 AM
bobnoffs bobnoffs is offline
 
Join Date: Jul 2012
Location: n. wi
Posts: 545
Default

scuba shops sell pure silicone grease to be put on o rings.so i am sure you can find it online.fuel doesn't dissolve it.
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  #5  
Old 08-22-2018, 05:50 AM
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snopercod snopercod is offline
 
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Location: Asheville, NC
Posts: 1,451
Default

A light coating of DC-4 works for me.
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  #6  
Old 08-22-2018, 06:16 AM
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Larry DeCamp Larry DeCamp is offline
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 691
Default Push down

You probabably know this but I picked up a helpful tip here on the forum. With the lock lever flipped up, push it down . Then rotate/lift the cap out. I use EZ turn and this procedure makes it very easy to remove caps.
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  #7  
Old 08-22-2018, 06:54 AM
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turbo turbo is offline
 
Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
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Default

pick your poison, anything is better than nothing. proper adjustment is critical. not to tight, not to loose.
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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
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  #8  
Old 08-22-2018, 07:20 AM
burgessbuilderMO13 burgessbuilderMO13 is offline
 
Join Date: Jan 2014
Location: Perth ont
Posts: 52
Default Lube for ring

For 17 years I've used a drop of oil from the dipstick, spread around the o ring then exercise the assembly. You have at least five quarts with you at any time.
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  #9  
Old 08-22-2018, 07:44 AM
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Dan Langhout Dan Langhout is offline
 
Join Date: Mar 2008
Location: Huntsville, AL USA
Posts: 459
Default Parker O-ring Lube

I use purpose made Parker O-ring lube (sparingly). I'll look when I get to the hangar and edit this post with the specifics.
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  #10  
Old 08-22-2018, 07:53 AM
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AlexPeterson AlexPeterson is offline
 
Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,110
Default

Quote:
Originally Posted by DanH View Post
The mystery product is probably EZ Turn or some other brand of fuel lube:

http://www.aircraftspruce.com/catalo...?clickkey=9406

Dismantle the caps, remove all the old lube, re-lube the o-rings sparingly, assemble and readjust the caps. Don't need new o-rings unless they are somehow cracked or damaged.

I like the chapstick idea. EZ Turn is sticky.
EZ Turn is not workable when it is cold out...you may not be able to remove the cap without warming them up. That is the very worst thing to use on fuel caps (unless you live in Alabama, for example...). Take the caps apart and clean as much of that glop off from all the components as you can. It can only be removed by rubbing it off - nothing reasonable will dissolve it. I've used Tri-Flow every few months for 15 years or so, works well. When the caps are adjusted properly, they should require very little force to click the tab down, and should pull up out of the tank very easily also when opened.
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