US Equivalent for O-ring 1,78 mm x 31,47

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jonniex

jonniex

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I am in the USA. I was told I need the O Ring: O-ring 1,78 mm x 31,47
mm 70 ShA (K5664)

Problem is all of the websites I go to use inches not millimeters so does anyone know what the Inside, Outside and thickness of material would be in inches.
 
PAI Size C/S mm I.D. mm C/S inch I.D. inch AS 568 BS 1806 ISO 3601
1-026 1.78 31.47 .070 1.239 -026 -026 026
 
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https://www.shearwater.com/products/perdix-ai/

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