Insulates and protects connections from mechanical abuse, wire pullout and abrasion. Heat activated adhesive lining provides impervious seal to salt water, oil, acids, and sunlight as well as providing strain relief. Highest shrink ratio - shrinks to 1/3 original size. Shrinks at 257-Degree F/125-Degree C. Product selection, quality, and service are the pillars of the brand. Ancor is your single source for wire and accessores.