3D Printed Cleanout Plug Repair Gasket - with integrated O-Ring

[sastocky]

I’m starting a project to 3D print a replacement cleanout gasket using TPU filament. I’ll be using a newly purchased gasket as a reference for measurements. This specifically is for the gasket in boat years 2017-Present F3F-67609-09-00. I am willing to work on a gasket for part F0R-67609-09-00 in boat years 1999-2016. I'll need someone to help me as I have no gasket to measure, no boat to measure the cleanout profile, and no boat to test the gasket.

My first prototype will be printed with Bambu Lab TPU for AMS (68D hardness). While this is likely firmer than ideal, it should serve well for initial testing. If needed, I’ll switch to a softer TPU (around 30D hardness) for better flexibility and sealing performance. I used to work in a lab with access to durometers and hardness testers, but I no longer have access to one. If anyone has an idea of the hardness for these gaskets, let me know.

I plan to modify the gasket profile to incorporate the O-Ring profile from @TeeNGee ’s O-Ring Find. The goal is to eliminate the need for a separate O-Ring while ensuring a reliable seal every time.

Let me know if you have any ideas. I will need a few of the pros on here to help me test these if I am successful. My boat is an hour drive from any major body of water.

 

[drewkaree]

I’m starting a project to 3D print a replacement cleanout gasket using TPU filament. I’ll be using a newly purchased gasket as a reference for measurements. This specifically is for the gasket in boat years 2017-Present F3F-67609-09-00. I am willing to work on a gasket for part F0R-67609-09-00 in boat years 1999-2016. I'll need someone to help me as I have no gasket to measure, no boat to measure the cleanout profile, and no boat to test the gasket.

My first prototype will be printed with Bambu Lab TPU for AMS (68D hardness). While this is likely firmer than ideal, it should serve well for initial testing. If needed, I’ll switch to a softer TPU (around 30D hardness) for better flexibility and sealing performance. I used to work in a lab with access to durometers and hardness testers, but I no longer have access to one. If anyone has an idea of the hardness for these gaskets, let me know.

I plan to modify the gasket profile to incorporate the O-Ring profile from @TeeNGee ’s O-Ring Find. The goal is to eliminate the need for a separate O-Ring while ensuring a reliable seal every time.

Let me know if you have any ideas. I will need a few of the pros on here to help me test these if I am successful. My boat is an hour drive from any major body of water.

The last time I was working on my boat, I was going to swap out my O-rings

To make a long story short, I have the O-rings for the FOR-67609 version, and would be able to send it to you, since it's never going to be used by me.

Regarding the filament, the only two that I've seen commonly available on Amazon are 98A and 95A tpu. I don't know how that compares to the numbers you mentioned above, but I also haven't printed with TPU at all, so I haven't invested much brain power towards the process.

That'd definitely be interesting to try

Something I was thinking of today was to print a ring to drop into the groove that the additional o-ring is being inserted into, so that the OEM rubber seal rests against that.

My current starboard plug works perfectly with the additional O-ring. The port side seal kinks with the additional o-ring in place, but allows water past the seal if the additional o-ring is missing.

My thought is that I can print a PETG or PLA ring for whatever depth I need,. and if I make it waterproof, it'll float (but it shouldn't even be able to breach the metal fitting)

If you made a filler ring from tpu, you could design it for a friction fit, such that it should be quite difficult to remove, and wouldn't be lost or come out with use

 

[sastocky]

See the 3D Drawing of the F3F-67609-09-99
Top


Bottom



These are without modification.

 

[sastocky]

Section view as well...

 

[gthh]

I am just curious-are you drawing using parametric parameters in your sketch? And if you are-willing to share your drawing???

 

[sastocky]

I am thinking the new profile will be something like this. The outer walls will be printed solid while the will not be much infill, if any to give it flexibilty. Comments? Ideas?

 

[sastocky]

I am just curious-are you drawing using parametric parameters in your sketch? And if you are-willing to share your drawing???

I measured using calipers. Some are parametric dimensions. It is hard to measure the flexible gasket so i measured the plastic housings, the gasket itself installed, and the gasket removed. I used the best dimensions I could find.

I drew the profile, then used the Revolve tool to project around a radius.

I'll gladly share the sketch for the betterment of our boats. It is in AutoDesk Fusion 360 . What type of file are you looking for? Are you looking to print as well? If so what material?

 

[sastocky]

I am thinking the new profile will be something like this. The outer walls will be printed solid while the will not be much infill, if any to give it flexibilty. Comments? Ideas?

View attachment 237963

This would be the new bottom view with integrated O-Ring. It will have to be printed, test fit, and trailed to see if it is too tight, too loose, or juuuust rigght.

 

[gthh]

I sketch using fusion

The reason I asked if the drawing is a parametric drawing because making changes to the design and to fitting to other model of boats would be easier-so it is just a suggestion.

 

[sastocky]

I sketch using fusion

The reason I asked if the drawing is a parametric drawing because making changes to the design and to fitting to other model of boats would be easier-so it is just a suggestion.

Understood. For that, it should be parametric for the most part, if not completely.

@drewkaree is giving me a gasket, part F0R-67609-09-00, I'll draw it the same. That is the only other gasket, correct?

 

[sastocky]