Flexible heat shrink tubing


All the heat shrink tubing I have bought ends up very stiff after shrinking. Is there a brand that will remain flexible after shrinking?




I tend to find that the thin-walled heatshrink remains flexible, and the thick-wallet goes hard. For thin-walled I typically use 3M with 2:1 or 3:1 shrink ratio, with or without glue.

I find that the thick-walled heatshrink from Wurth excellent to stiffen a cable and give strain relief, as it molds quite well into a tight groove, etc.



Thank you, Olav. Your comments led me to DigiKey’s selection filters and from there to a great selection guide from 3M. I will try several of these. Thank you for your help.

P.S. I live in a suburb of St Paul, Minnesota, where 3M headquarters are located. Wonder if they would let me come over and get some samples? :clown_face: