13mm wall, 35mm bore, 2m length

Eurobatex AT Solar is a black
flexible elastomeric foam pipe insulation suitable for use in solar
heating pipework, process pipework (including stainless steel), low
temperature steam and outdoor applications without additional painting. 

It is a closed cell material, Class 1 fire rated according to BS 476: Part 7: 1997 and is ODP Zero and GWP Zero. 
It has a temperature range of +150ºC to -45ºC. 
It is a direct technical equivalent to materials such as HT/Armaflex.

Thermal Conductivity at 40ºC is 0.041W/mK 

Eurobatex
AT is a high temperature product similar to HT/Armaflex . It is
suitable for use at 150ºC continuous or 175ºC intermittent. Eurobatex
AT is suitable for long term use outdoors without painting. It can be
used directly on austenitic stainless steel and has a Class 1 fire
rating.