For flame-retardant, corrosion-resistant insulation around electrical wire, use the Gardner Bender 1-3/32 in. Heavy-Wall Heat Shrink Tubing. This tubing is submersible to accommodate direct burial installations and shrinks at 250 degrees Fahrenheit.
Impact, abrasion and corrosion resistant polyolefin construction
Submersible and ideal for direct burial installations
Inner adhesive bonds to plastics, rubber, neoprene, steel and polyethylene