Author Topic: Fuel cap gasket (Read 8058 times)

Rahul · « **Reply #25 on:** June 03, 2021, 01:05:32 »

Is this the fuel-resistant rubber gasket? #1404710079

https://www.ebay.com/itm/352527357445

Mike Hughes · « **Reply #26 on:** June 03, 2021, 01:12:08 »

Yes. I replaced my disintegrating cork seal one with this blue one just after PUB 2017 and like it just fine. It DOES generate more resistance when removing and refitting at fill-up, but the total lack of seepage makes up for it.

mauro12 · « **Reply #27 on:** June 03, 2021, 11:38:26 »

Guys , if you could post an European source for this rubber gasket it would be great . I only found cork. Buying from USA would be very expensive game .

Iconic · « **Reply #28 on:** June 03, 2021, 12:17:06 »

Quote from: 114015 on June 02, 2021, 23:21:28

... but NOT with what the other said.
The original cork gasket is just crap. It deteriorates quickly and is prone to losing gas with the relevant spots on your rear bumper half.
Better use a fuel-resistant rubber gasket; there is one with a 140 470 something number (which I have to look up again).
Put a little bit of grease on (I always use MoS2 grease) on the gasket and on the filler neck twice a year - and it will work like a charm.
Never having spots on the bumper anymore, no smell and easy opening and locking.

Achim

I rarely disagree with Achim, but I do this time.
Maybe the rubber gasket I bought from the Classic Center was out of spec, but it was so thick it was unusable.
Original Cork gasket is what??? Not for me !!! It is perfect. I hope we can discuss this in Chicago, Achim.

mauro12 · « **Reply #29 on:** June 03, 2021, 12:43:06 »

Maybe the trick is to put a thin layer of silicon grease in the cork side . This will prevent the cork from cracking and having too much friction .

Iconic · « **Reply #30 on:** June 03, 2021, 12:45:26 »

You need some sort of grease on both the cork or the rubber.
No question.

mauro12 · « **Reply #31 on:** June 04, 2021, 10:11:52 »

It seems that there is not a clear view if cork is better than rubber .

Pawel66 · « **Reply #32 on:** June 04, 2021, 12:29:11 »

I just looked and I have no idea what I have. Thin and grey. But I recalled that i ordered the whole cap later, with lock to my key number. So it came with this grey gasket. It works perfect.

Iconic · « **Reply #33 on:** June 04, 2021, 13:29:16 »

Quote from: mauro12 on June 04, 2021, 10:11:52

It seems that there is not a clear view if cork is better than rubber .

As long as you are still discussing the gasket and are looking for other views, have you done a search?
Here is an old string that is very relevant.
Good luck to you, but if you go with cork, you are going with how it was originally specified.

https://www.sl113.org/forums/index.php?topic=17215.msg118902#msg118902
Enjoy the ride !!
By the way Pawel, if it is grey it might be the rubberized side of the cork. Does this make it more confusing??
Mark

Pawel66 · « **Reply #34 on:** June 04, 2021, 14:13:36 »

Quote from: Iconic on June 04, 2021, 13:29:16

By the way Pawel, if it is grey it might be the rubberized side of the cork. Does this make it more confusing??
Mark

Yes, it does, thank you.

It can be that indeed. Very thin, stuck to the cap.

when I had issues with cork gasket for fuel level sender, I bought the cork sheet and cut it. The cork sheets that are petrol resistant come in all kinds of thicknesses, starting from 1mm if I recall correctly.

mauro12 · « **Reply #35 on:** June 04, 2021, 15:36:57 »

I’m wondering how my gasket disappeared. I left the car to the body shop and by chance I realized that the cap was not closing properly , was very loose. I think my gasket just got disintegrated and probably was the original from 54 years ago . When I receive the new one I will let you know .

lreppond · « **Reply #36 on:** June 04, 2021, 20:06:29 »

I’m in Achim’s camp. I prefer the blue rubber gasket. It goes on easier, forms a tight seal and to date, I’ve had no issues. The cork one works perfectly when first installed but I did not find it as durable and it is more difficult to put install. The classic center tried to dissuade me from the blue rubber insisting the cork was correct. They’re 100% right, of course, but I still prefer the rubber one. Now that’s my personal opinion... if the cork performs better for your individual use, then go for it. As pointed out by Mark (Iconic), cork IS OEM.

mauro12 · « **Reply #37 on:** June 05, 2021, 10:41:18 »

Why is more difficult to put the cork one? What is the right way to install ?

Pawel66 · « **Reply #38 on:** June 05, 2021, 12:45:35 »

Mauro, I think it is mainly a question of lubrication and thickness of the gasket.

Lubrication is, I think, obvious - it is good to lubricate both types.

Thickness: gasket, if too thick, prevents the tags of the cap travel all the way to their lock position. And they should get there before you turn the key, because otherwise the cap may get lose and fall off. These cap tags are traveling on a thread-like edges under the filler neck so that the cap is pressed against the filler neck as you screw it on.

Rahul · « **Reply #39 on:** July 10, 2021, 22:13:37 »

So I tried the blue rubber gasket and just couldn't figure out why it was impossible to attach the cap to the car. I just assumed that the gasket must be way too thick and ordered the cork one instead.

Today I gave it one last try and realised I was being a dummy. There was an old black (maybe dark grey, per pawel?) gasket embedded in the cap. I guess it had compressed/deteriorated so much that it looked to me like it was just the interior face of the cap itself.

I prised this black one out and put the blue one in its place and it fits great... A little tough to get on first but certainly feels very secure.

I expect this is fairly obvious to most, but figured I would share this in case it had been overlooked by others.

Pawel66 · « **Reply #40 on:** July 10, 2021, 23:25:39 »

Probably not as obvious as it seems. Good to lubricate the new one a bit.

114015 · « **Reply #41 on:** July 13, 2021, 20:55:37 »

Quote

Is this the fuel-resistant rubber gasket? #1404710079

https://www.ebay.com/itm/352527357445

Mauro,
That is the Mercedes dealer parts number: A140 471 0079. It's that easy.

https://classicparts.mercedes-benz.de/dichtring-158689?number=A1404710079

My 2 cents (as are Len's 2 cents): Go for it and leave the original cork in your memorabilia display cabinet.

Achim

mauro12 · « **Reply #42 on:** July 15, 2021, 16:59:55 »

Hi , my cork gasket seems to work pretty well . But which one was the original gasket back in 1967? Cork or rubber ?

Iconic · « **Reply #43 on:** July 15, 2021, 17:52:31 »

Cork was original, correct?
I don't know why Achim wants rubber, if cork is original.
Looking at at blue rubber gasket (mine was blue from the Classic Center) on the fuel cap looks as out of place to me as the wrong ignition wires, or wrong relays, or wrong ignition resistors, or painted black under hood for non-black car, or polished valve cover, or etc, etc.
Oh well, we can't agree on everything, otherwise we won't have anything to talk about.
I'm using a cork gasket with no negative issues.
Mark

Garry · « **Reply #44 on:** July 15, 2021, 23:34:31 »

Agree with Mark, I put a new cork gasket in 8 years ago and it has not given any problems at all.

kampala · « **Reply #45 on:** July 16, 2021, 15:23:38 »

There must be good cork and bad cork. I bought two cork ones from Classic Center -- they each lasted about 3 or 4 tankfuls - yes - no exaggeration.

I replaced with Blue and blue one has lasted many many tankfuls. And YES, I lubricated them and continue to lubricate about once a year or so.

Mauro -- compared to almost everything else on the pagoda, these are CHEAP. Buy both and report back to us what you think is best.

mauro12 · « **Reply #46 on:** July 17, 2021, 07:01:02 »

I bought 3 from mb classic.de.
I hope they will last 1or 2 years each .

Garry · « **Reply #47 on:** July 18, 2021, 00:10:57 »

Maybe oil/ lubrication is the key to success with a cork seal. i put a blue grease on mine about once a year

wayne R · « **Reply #48 on:** August 27, 2021, 13:51:19 »

Sorry to help late ,, also i have not been on the forum now for about 9 months, as i decided to sell my
Pagoda back then , and go back to American Buick Cadillac classics that i missed for about 10 years.
To help here ,i have replaced these gas cap seals for years now, its very easy, still have some the gasket cork rubber
combination sheets that i purchased about 20 years ago from pep Boyes, ---should still be able to purchase in US.
no need for cement or glue, like others have said, it comes in 2 thickness. and i have never had to replace this again
after the first time, and i used the thin size, 1/16 inch thick----works perfect.---regards
and no its not as pagoda cap its a Buick.

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Author Topic: Fuel cap gasket (Read 8058 times)

wayne R