This heat shrink butt connector implements a dual seal design that utilizes both heat shrink technology and an adhesive seal to safeguard wire connections against moisture and corrosion. It is specially designed for splicing wires in automotive and marine applications, providing reliable and long-lasting protection. The polyolefin material effectively insulates while maintaining durability. Capable of operating at temperatures ranging from -55°C to 125°C, with a shrink ratio of approximately 3:1, and a dielectric strength of 2500V (AC) and an insulation resistance of 1000 mego hms at 100V (DC). Available in four color-coded sizes for efficient on-site installation.