Need a new cork gasket for your Durex 986128 or Durex 986640 gasoline filter?

I have stored full size .pdf patterns of the gaskets on Google Drive. Download or print them out directly from the site.

> Durex 986128 Gasket Pattern
> Durex 986640 Gasket Pattern

PRINT THEM OUT AT FULL SIZE. No scaling. No "Fit" or "Shrink." There is a three-inch scale on each pattern to measure and confirm that it is printed at the original scale.

Instructions are on each sheet.

GM instructed Cadillac servicemen to replace the gasket whenever the filter is serviced.
> Service Bulletin

They shrivel up like a corn flake when they dry out and will not return to shape when wetted again. I carry an extra one in the glovebox.
> Dried out gaskets

Thanks to "801curt" on Stovebolt and to "chef-chevy" on VCCA Chat for measuring and testing the 986128 gasket.

I created the 986640 gasket using my 986640 filter. My 986640 gasket is 1/64 larger than the MPC description. Fits well.

Let me know if you have problems with the files or if the gasket does not fit.

- Lonnie

- Lonnie
My '54 3104
Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post.
lonniecook [at] aol [dot] com. I sold my '54 3104 12/12/2017, but I still visit Stovebolt.

OLD STUFF ... houses, furniture, cars, wine ... I love it all