I misunderstood.
The Godox R1200 Ringflash (via the Ad1200Pro pack) works as well as our former Profoto ProRing2 Plus (so far), and has a removable shield with metal sides and a glass 'donut' on the front - very, very similar to the Bron RF C they obviously copied. Avoids side spill, enable use of the grids, etc.
To avoid the risk of using the RF with no shatter protection in our 88 & 133, etc., the Lexan shield w/film we created clicks into place and mimics the glass cover from the Bron Ringflash P Conversion Kit: Clear sides, donut front.
We couldn't determine if the tube of the R1200 was UV coated, so we added UV blast film to the DIY 'P Conversion Kit' as a precaution. It doesn't impact ventilation, cuts UV and is another layer of shatter resistance.
Glad you were able to get an answer to your question.
Thank You ! I apologise again if I misled you; the Bron Ringflash already has a UV glass ring in front of the tube - so any UV emanating from it should be captured by that since its already quite common and safe to use the Ring Flash without any further attachments.
The shapers called the Beauty Reflectors (33.123.00 & variant 33.124.00) that attach to and sit in front of the Ring Flash also have a UV protection glass - but all these reflectors do is shape the light they receive that has already been transmitted via the UV protection filter on the Ring Flash head itself, so I'm unclear and would like to understand why a second layer of protection is considered necessary. Part of the reason why Broncolor costs so much is that the product design and testing regimes are incredibly rigorous and scrupulous - problems are ironed out long in advance of release. Have no experience with Godox but chinese stuff scares me.
Aside from that, the Bomb Film would also act as a layer of thermal insulation, increasing the heat within the tube area at high outputs and possibly enhancing the chance of an explosion, making it's presence a self fulfilling prophecy! Who knows? Dissipating heat is probably one reason why the UV protection glass ring on the Ring Flash is not sealed flush to the edge, allowing the fans within to circulate the air.