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Small Air Cooled Gasoline Engines

fuel cap gasket


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  #1  
Old 07-29-2019, 04:39:28 PM
pigpen60 pigpen60 is offline
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Default fuel cap gasket

What do you use to replace the fuel tank gasket?
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Old 07-29-2019, 04:56:53 PM
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Mike in NC Mike in NC is offline
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Default Re: fuel cap gasket

I have cut them out of cork.
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Old 07-29-2019, 05:15:17 PM
pigpen60 pigpen60 is offline
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Default Re: fuel cap gasket

Cool, I have a roll of 1/8" cork gasket material. Do you use adhesive or let it float.
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Old 07-29-2019, 06:01:10 PM
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Default Re: fuel cap gasket

I just cut it to where it is snug inside the cap and let it float.
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Old 07-29-2019, 07:02:26 PM
pigpen60 pigpen60 is offline
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Default Re: fuel cap gasket

Thank you!
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Old 07-29-2019, 11:19:41 PM
gdstew gdstew is offline
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Default Re: fuel cap gasket

Or you can use rubber, just make sure it is vented
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Old 07-30-2019, 07:56:43 AM
Leonard Keifer Leonard Keifer is offline
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Default Re: fuel cap gasket

With either the cork or the rubber put a piece in gasoline first to make sure it's compatible with gasoline. Some of the newer "cork" is actually cork bits glued together. Some types of rubber swell and rapidly deteriorate/dissolve in contact with gasoline.

I had some nice thick rubber I thought would make a nice gas cap gasket, put some in gasoline first and it fell apart.
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  #8  
Old 07-30-2019, 09:32:51 AM
pigpen60 pigpen60 is offline
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Default Re: fuel cap gasket

Good to know. Will do the soak test.
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Old 07-30-2019, 12:23:49 PM
EvilDr235 EvilDr235 is offline
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Default Re: fuel cap gasket

Would leather work ? leather used to be used to make oil seals.
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Old 07-30-2019, 01:08:00 PM
Andrew Mackey Andrew Mackey is offline
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Default Re: fuel cap gasket

Not well, it cracks with age and shrinks when exposed to gas. If you cant find good cork, you might try velum gasket material.
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Old 07-30-2019, 03:17:27 PM
Ken Karrow Ken Karrow is offline
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Default Re: fuel cap gasket

I use gasket material like Andrew, poke a little hole in it off to one side so that tank can vent. Cap gasket is basically just to keep gas from splashing out due to vibration. Tip of ice pick size hole is right.
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Old 07-30-2019, 04:16:21 PM
Tracy T Tracy T is offline
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Default Re: fuel cap gasket

leather use to be a common component used for the accelerator pump seal, rubber was NEVER used in or around gasoline! often people will refer to the neopreme fuel lines as rubber but they are not rubber.
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Old 07-30-2019, 06:14:47 PM
Andrew Mackey Andrew Mackey is offline
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Thumbs down Re: fuel cap gasket

With todays crap E-10, neoprene is no good either. The alky in E-10 eats it!

Yes, when gas was gasoline, leather was used. todays gas is a mix of volotile gasses, a little gasoline and a lot of additives. Shouldnt call it gasoline anymore - it isnt!
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Old 07-30-2019, 07:36:27 PM
Bolens 1000 Bolens 1000 is offline
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Default Re: fuel cap gasket

For the small wisconsin & briggs with saber style cap I had a bunch remade ethanol resistant rubber

https:///w...c87-and-69961/
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Old 07-30-2019, 07:40:41 PM
pigpen60 pigpen60 is offline
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Default Re: fuel cap gasket

Bolens 1000 Your link isnt working.
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Old 07-31-2019, 11:25:47 AM
Fred M. Fred M. is offline
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Default Re: fuel cap gasket

This web page is messing things up!

Remove one / and insert before wisconsin:

b o l e n s p ar t s a n d s u p p l i e s . com /
(without the spaces)

Fred
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Old 07-31-2019, 01:50:44 PM
Power Power is offline
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Default Re: fuel cap gasket

Quote:
Originally Posted by Tracy T View Post
leather use to be a common component used for the accelerator pump seal, rubber was NEVER used in or around gasoline! often people will refer to the neopreme fuel lines as rubber but they are not rubber.
When they started putting alcohol in gas, the rebuild kits came with neoprene plunger seal boots
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Old 07-31-2019, 08:13:50 PM
pigpen60 pigpen60 is offline
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Default Re: fuel cap gasket

I soaked a piece for 24 hrs and it held up.
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