Bonded Sealing Washers (Dowty Seals) for GX CS4 Replacement/Substitute

While these aren't an exact match for the OME bonded sealing washer, they're just closest I could find without contacting GX.
Replaced both on the banjo fitting where one came apart after my cylinder service. Dead head tested 4500psi, then topped off 6.8L tank to 4500. No leaks filling or held under pressure several minutes.
OME is 1.9mm thick x 16.2mmOD x ??ID (can't remember exactly OD of banjo bolt around 9.75ish)
Anyway they sealed and are both pressure and temperature rated.
IMO it's an acceptable substitute. These cost $16.58 w/shipping and arrived in 6 days (including weekend).
No idea what cost or shipping time would have been with GX.
Belmetric.com
I must add that ANY substituting of parts, seals, or o-rings other than OME from GX are done at your own risk.

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Possibly, would prefer more detailed specs though. The GX compressors can go to 5600psi and connected to the cylinder head they'd need to withstand moderate heat.
Maybe if in the UK, and couldn't find anything with more specs. Shipping and tariffs to the US right now wouldn't be practical though for a maybe.