Re: {Chrysler 300} O-Ring for '63 Chrysler Transmission

Bubble, nitrile or silicone are best. O ring is 3/4 OD by 1/8 or .75 by .125. Rick

On Tue, May 5, 2026, 11:17 AM Kevin deGraauw <kdegraauw@xxxxxxxxxxx> wrote:

I think that is known here to Google. But specifics are another thing.

I too would love to know the OD cross section on this particular one, especially since Pat Blais seems to be MIA and was the definitive guru and excellent source of these items. So I too am following...

Kevin

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From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> on behalf of Marshall Larson <granitledge@xxxxxxxxx>
Sent: Tuesday, May 5, 2026 11:08:46 AM
To: mplindahl@xxxxxxxxxxxxx <mplindahl@xxxxxxxxxxxxx>; 300 club <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} O-Ring for '63 Chrysler Transmission

A Google search will get you all you will ever need to know about O-rings!

On Mon, May 4, 2026 at 5:20 PM <mplindahl@xxxxxxxxxxxxx> wrote:

Thanks Nick! I assume the ’62 tube is the same as the ’63 tube? Also, I see Bob used the BLUE O-ring color and my first thought is Blue a different material than standard Black? Are there different grades or hardness of o-ring materials?

I don’t need one for the Space Shuttle, but I would like to get the best one vs. the cheapest one! Thank you!

Mark

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of Nick Taylor
Sent: Monday, May 4, 2026 3:54 PM
To: mplindahl@xxxxxxxxxxxxx
Cc: Club International Chrysler <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} O-Ring for '63 Chrysler Transmission

Bob Merritt covers it in this video - https://youtu.be/w2UuOHPapEY?si=QGgnPk-htAY83GcB

On Mon, May 4, 2026 at 1:17 PM <mplindahl@xxxxxxxxxxxxx> wrote:

Hello All,

Does anyone have the exact size of the rubber O-ring that fits on the dip stick tube? I am having this replaced by a local mechanic and I would like to bring him the O-ring before the tube is removed and all the trans fluid flows out of the hole.

Your help is appreciated. Thank you!

Regards,

Mark Lindahl

’63 300 Conv.

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