RS PRO Heat Shrink Tubing Black 3.2 mm Sleeve Dia x 20m Polyolefin 2:1 Ratio 389-640

RS PRO 389-640 Heat Shrink Tubing is a flexible polyolefin electrical sleeve designed for reliable insulation and protection of wires, terminations, and electrical joints. With a 3.2 mm sleeve diameter and supplied on a 20-meter reel, this tubing is widely utilized in electrical, electronic and cable management installations.

This tubing features a 2:1 shrink ratio, meaning it shrinks to half its original diameter when heated. It is particularly advantageous for maintenance in situations requiring a tight fit or for bundling wires together, reinforcing terminations and joints, and color coding for identification purposes. The black color provides a professional appearance and standard visibility for industrial applications.

Constructed from durable polyolefin, the RS PRO heat shrink tubing is engineered to operate in a wide temperature range from -55°C to +105°C, making it suitable for use in environments with fluctuating temperatures and for delicate or temperature-sensitive equipment. Shrinking occurs at a low activation temperature of 90°C, ensuring compatibility with standard heat guns and ovens for simple installation.

The tubing is non-flame retardant and not halogen-free, but it is compliant with SFP (R4-0580), RoHS, and ELV standards for industrial and commercial applicability. It is supplied on compact reels allowing efficient storage, access, and dispensing, which is highly advantageous for workshops, cable management, installation projects, and electrical repair tasks.

RS PRO heat shrink tubing 389-640 is ideal for general-purpose wire insulation, protection, cable bundling, and reinforcement of connections in electrical panels, industrial machinery, laboratory setups, and construction environments. It offers a practical solution for safeguarding wires against environmental stress, abrasion, and movement.

The tubing offers a 2:1 shrink ratio for superior fit and sealing. Made from flexible polyolefin, suitable for temperature-sensitive components. Black color with 3.2 mm original sleeve diameter, shrinks to 1.6 mm when heated.

Supplied as a continuous 20-meter reel for convenient storage and dispensing. Operating temperature range is -55°C to +105°C for broad electrical and industrial use. Non-flame retardant and not halogen free, complying with SFP (R4-0580), RoHS, and ELV standards.

Heat shrink temperature is 90°C, facilitating easy installation with heat gun or oven. Explore more cable sleeving and Heat Shrink Tubing from RS PRO in the Wires & Cables category at EnvMart.