Has anyone ever?

[emac]

Has anyone ever used a O ring when changing oil on the oil and sump instead of a crush ring
Thanks
Ernie 81SC

[tazzieman]

Why do you ask?
Why not use a crush washer and prevent any chance of a leak?
You can reuse the old washer if desperate; just sand it smooth .
I wouldn't use an O ring , personally.

[Dublinoh]

They cost .25, why wouldn't you use them?

Porsche 911 & Carrera Filters & Belts - Page 1

[Joeaksa]

Ya know, the Porsche factory has prolly tried all sorts of options and decided that the crush washer is the best. Personally I think that I will trust them on this...

[Tippy]

I'd think the o-ring would deform too much to seal properly.

O-rings have to be "contained" to work.

[Bob Kontak]

Originally Posted by Tippy

O-rings have to be "contained" to work.

+1
My pressure washer has a flat rubber washer on the pump drain plug. When it gets squished it will be uniform. Something like that would work but as stated, why bother.

[GH85Carrera]

Originally Posted by Tippy

I'd think the o-ring would deform too much to seal properly.

O-rings have to be "contained" to work.

The torque spec it pretty high on that plug. It would turn any o-ring to mush. I agree with everyone else, just replace it. Heck I have re-used more than a few of them with no leaks. I usually replace them but I have been in the middle of a oil change and realized I did not have any more new ones.

[JAR0023]

Originally Posted by Joeaksa

Ya know, the Porsche factory has prolly tried all sorts of options and decided that the crush washer is the best. Personally I think that I will trust them on this...

Add in the engineers at Honda/Acura as well. They use crush washers. I've changed a bunch of them and never a leak. I use a new washer each time but wouldn't have an reservations about reusing a washer. I have a buddy with 200k on his Honda and the original crush washer. He's a maintenance fanatic but a cheap ba$t@@d. He likes to remind me about the $5 this saved him over the years.

At the torque value where the crush washer works I have no fear of the bolt vibrating loose. I would think that a rubber seal would work correctly in a lower torque range. Would the bolt have a greater probability of loosening? I don't know but why chance it?

On this one put me firmly in the "if it ain't broke, don't fix it" camp.

J

[RSTarga]

Hot oil, fragile rubber threads & torque, gee what could go wrong?

[Jim2]

Search this on google and look at the images: stat-o-seal earls


You would need to see if the shoulder on the drain plug is wide enough that it will seat on the aluminum part of the seal. Provides O-ring seal, but allows torque to tighten the fitting.

[Bob Kontak]

Originally Posted by Bob Kontak

+1
My pressure washer has a flat rubber washer on the pump drain plug. When it gets squished it will be uniform. Something like that would work but as stated, why bother.

Originally Posted by GH85Carrera

The torque spec it pretty high on that plug. It would turn any o-ring to mush.

I was thinking about that after posting the rubber washer comment. The plug on my pressure washer pump is plastic. Two totally different applications.

[Jim2]

[Tippy]

^^^

If that is used for high torque situations, the outer washer is taking the clamping pressure, not the o-ring.

Notice it's "contained" too.

[CCM911]

Order crush washers fifty at a time and never look back.

[emac]

I have always used them and have had my car for 15 years, the thought passed my mind when I was cleaning out the garage and found a box of about 100 rings. I agree with all the posts and have about 20.

[combatic]

Just use the crush washers as designed.

I suspect that an o-ring is designed for a radial seal and a crush washer is designed to be sandwiched and then deformed under load. They do make rubber flat washers for sealing in some instances though.