What type of flange is this?

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image
image3024×4032 2.2 MB
Can anyone identify this flange type for me?

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i believe thats a 4 bolt CF ultra high vacuum flange

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What is it on? Never knew honda rims held vacuum LOL

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lmaooooo yeah what do you think the stance movement is all about!!! gotta get that downforce

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It’s not conflat cause I know conflat uses copper gaskets and a knife edge, it’s some sort of ISO flange

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could it be custom or proprietary?

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Take some sizes i can search better
I think it. S iso

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Were just gonna weld a reducer on so that takes care of that

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Well it’s not an asme b16.5 rtj flange

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looks like an ISO-K or ISO-F vacuum flange, if i am correct in assuming that centering ring/seal assembly is removable. ISO-K/ISO-F flange

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Flange.pdf (168.8 KB)

I think it’s an ISO

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