Where to order copper crush washers by size?

I need one ( mercedes 007603-014403) for my 300SDL, but apparently Mecedes switched to a new ordering system this past Monday that still isn't working yet, and they have no idea wen or if they will be able to get one.  Meanwhile my car has been off the road for more than 2 weeks now and its dripping diesel on the ground.  Is there any way I can measure the old washer and order a new one from somewhere else?

McMaster Carr has a large variety of sealing washers.

What size is it?

Would  a standard 5/16 or 3/8 Ford one work? They don’t  have to be exact size most of the time. Might be worth a trip to the local parts store and $2 to try it.

For about 10 bucks I went on Amazon and bought a box that has like 8 different (metric) sizes, about 15-20 of each. My local parts store charges 3.99 for TWO, so not a bad deal...I'd assume you can find similar with SAE sizes. 

https://www.amazon.com/gp/product/B07DHHLP34/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

In reply to irish44j :

I don’t consider those to be crush washers.  I’ve been chasing a source of the crush washers used in my Nissan truck.  The dealer wants stupid money and has to order them. 

In reply to spitfirebill :

What's the distinction from a crush washer here? Only washers with a deformable not-flat cross section that's flattened in tightening?

I figured anything soft enough to deform substantially on first use would be effective (once).

bigdaddylee82 said:

McMaster Carr has a large variety of sealing washers.

Came here to say this.

You can always try annealing the old washer then polish off any groove in washer with flat fine sandpaper, the crush washer needs to be soft and smooth to seal.  Or you can go over to your local Harley and get some 10 or 12mm brake seal washers, dont know if they are diesel compatable but they are pretty nice.  

https://www.amazon.com/Brake-Fitting-Banjo-Sealing-Washers/dp/B01LYGO3YM

What size do you need?  I have a small stash of stuff like this.  

The old one measures 19.5 mm od, 14mm id, and 1.5 mm thick.

irish44j said:

For about 10 bucks I went on Amazon and bought a box that has like 8 different (metric) sizes, about 15-20 of each. My local parts store charges 3.99 for TWO, so not a bad deal...I'd assume you can find similar with SAE sizes. 

https://www.amazon.com/gp/product/B07DHHLP34/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

This might actually work, I ordered one and will give it a try.

Ransom said:

In reply to spitfirebill :

What's the distinction from a crush washer here? Only washers with a deformable not-flat cross section that's flattened in tightening?

I figured anything soft enough to deform substantially on first use would be effective (once).

The cross section is c shaped and easily crushes.  

I have one, only one though.  If you want it PM your address and I can get it sent out monday.  Good luck with it.  

For flat copper washers, which is what is pictured, you can anneal them with a torch.  Get washer hot enough to change color, let cool and it should be good to go.

spitfirebill said:

In reply to irish44j :

I don’t consider those to be crush washers.  I’ve been chasing a source of the crush washers used in my Nissan truck.  The dealer wants stupid money and has to order them. 

If you're talking about this, then, interesting. i've always referred to these (and larger more complicated ones) as "crush gaskets"

McMaster seems to call regular 'ol flat aluminum/copper sealing washers "crush washers"

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Harbor Freight sells a variety pack of copper crush washers pretty cheaply.  I keep a pack in my garage "just in case".  They've worked well for me.  

I had a BMW GS motorcycle.  2007.  The service manual was adamant about replacing the coppper washer at EVERY oil change.  I never did.  And it NEVER leaked a drop.  I did flip it over each time.

In reply to benzbaronDaryn :

The ones from Amazon should be here Monday, but if that doesn't work I will definitely take you up on that offer.