O-ring or gasket for Oil Strainer?

[Neostead2000]

Long story short my '99 RB20Neo came without an oil pickup tube (oil strainer) and i had to source one. The one they sent me has a groove which in my opinion should work with an O-ring only. However, when I was ordering the gasket for it via correct part number (150531E400), the gasket is a thin metal piece with a very slight protrusion which is meant to crush between two flat surfaces. So now I'm wondering should I just go to the hardware store and find a suitable O-ring and run that only, or try using the gasket only?

This is the gasket that came:

 

And this is how my oil strainer looks like, with a big groove for an o-ring:
 

 

From what I gather, this strainer is from an early RB from an R32 which under the parts diagrams only appears to use an O-ring? What if I filled the groove fully with RTV silicone and then added the OEM gasket on top? I reckon that should still produce a good seal for the vacuum of the oil being sucked up.

[joshuaho96]

As a general rule you do not mix gaskets and RTV. That is a recipe for disaster.

[GTSBoy]

If the block mating surface will work with an o-ring, then use the o-ring that suits the pickup.

If you were going to fill the groove to use the gasket, then the best bet would be some epoxy putty. Not bloody silicone!

Remember to use a suitable o-ring material for hot oily conditions. Not just some random hardware shop o-ring.

[Neostead2000]

The block side is completely flat with no grooves. I do not know if the R32 blocks have the same groove cut out or if it's just machined onto the strainer flange. I agree though, if I was to fill the groove it may be a much better idea to use metal epoxy essentially "welding" it flush inside the groove.

[GTSBoy]

On 4/25/2022 at 5:39 PM, Neostead2000 said:

The block side is completely flat with no grooves.

Seems fine. You never have 2 grooves facing each other.

[Duncan]

I am pretty sure the rb26 setup which does use an o-ring uses a squared off one, not a round one. I think it would be worth sourcing the correct one if possible or you might have disappointment on first start