below is  dimater 25mm  flex silicone neon led tube 

40mm /38mm optional

take noted  that must make sure the led strip width less than 8mm inside the silicone  tube .

two strip sticked  together back by back to make 360 viewing.

Picture

Finished picture 

below is 6000K 

there are many 360viewing neon tube size optional -downlod the catalog here please 

https://www.rose-lighting.cn/static/upload/file/20230420/1681977790473650.pdf

Advantage of silicone Neon  Tube for led strip

1. there is no dark area and No light leakage for digital flex silicone Neon LED tube series,
2. it can be folded and bent without problem.
3. Easy to be installed and transported .
4. applied well in all kinds of High-end venue and outdoor use (Ip rate: 67)
5. take the advantage of unique optical technique and special housing design ,

it increases the intensity and uniformity of light greatly ,anti UV silicone coating ,

no color change outside within 3 years warranty
6. all led strip series belong to low voltage flex led strip,voltage varies from DC5V-DC24v，

can be cut at 1led,3led,6leds to make a individual part.
7. various designed end caps for different project
8. Packing : Static bag seal packing(locking static bag + moisture-proof desiccant)
9. 5m/reel(length can be customized as the customer requirements)