3M Silicone Cold Shrink Tubes - LSF Low Smoke Zero Halogen for Low Voltage Cable Splices, Cable Repair & Insulation Protection 3M 8445-2.5 Silicone Rubber Cold Shrink Tubes Minimum diameter seal 10.7mm Maximum diameter seal 18.29mm Cold shrink tube length 43mm *No tools or heat shrink gas torches required for installation of 3M cold shrink *Seals tight, retains resilience and pressure even after aging and exposure *Moisture resistant 3M silicone cold shrink *Cold shrink resists acids and alkalies *Resists ozone and UV ultraviolet light *Fire resistant 3M silicone cold shrink tubings 3M Silicone Cold Shrink Applications Primary electrical insulation of insulated wires and cable splices up to 1000 volts, insulation of electrical aircraft cables, suitable for indoor and outdoor applications, moisture sealing for high voltage (HV) air insulated cable connectors and cable lugs, insulation of secondary splices (copper and aluminium conductors), cable sheath repairs, insulation of line conductor transition connectors. Flammability Testing of 3M Silicone Cold Shrink 3M Cold Shrink Insulators 8440 Series flammability testing was conducted with specimens positioned both vertically and horizontally per specification BSS 7230. The 3M silicone rubber cold shrink insulation passed the Flammability Test of BSS 7230 without supporting a flame. In addition, these cold shrink insulators were also subjected to a gas flame test as outlined in paragraph 4.4.15 of MIL-C-24643A and met the passing criteria as specified - no fuse was blown during the one hour flame exposure of the 3M Silicone Cold Shrink Tube.