The clear 'encapsulated' look could be replicated if you have a lot of time and patience!
Using a high-res photo of the label, bring into Photoshop and change colour from red to light blue.
Adjust output @ 300dpi to print correct 100% size.
Print out on color printer (a colour laser printer via a print shop is best as they use fused toner particles vs ink)
Make up a dam out of modelling clay the correct size and depth for the label (allowing for meniscus and trimming)
Trim the laser printed label to correct size.
Place at bottom of dam.
Use clear two-pack casting resin to encapsulate the label.
Allow to set and harden 100% over 48hrs.
Remove from dam and trim the rough cast label, then sand flat using finer grades of wet'n'dry paper (320-400-600-800-1200-2000) with soapy water on a glass plate.
Final polish with Autosol Plastic polish till crystal clear.
Use double sided tape or contact cement to bond the label into the regulator recess.
OR
Look harder for OEM labels