20mm fibre filled glass rope lagging.
Sold by the metre, eg buy 3 and receive one big 3 metre length.
Glass rope lagging is manufactured from a central core of glass sliver which is contained by an overbraid of texturised continuous filament glass yarn. The low thermal conductivity offers an efficient method of insulating pipework & alternatively for flue sealing caulking applications as well as thermal acoustic applications.
The maximum operating temperature is 550 to 600° C.