SKU: 143-0501V

Black Heat Shrink Tubing 2:1

2:1 Heat shrink – reliable insulation for crimp terminals and cable ends

Our heat shrink tubing is designed to provide extra protection, stability, and sealing for cable ends and crimp connections.
It insulates and reinforces crimped terminals by covering both the cable and the terminal lug, ensuring a secure, moisture-resistant, and professional-grade finish.

Ideal for use in automotive, marine, and industrial electrical systems, this tubing combines excellent electrical and mechanical properties with outstanding resistance to acids, corrosion, and abrasion.
It produces very little smoke and contains no halogens or cadmium, ensuring a safer and more environmentally friendly installation.

Key Benefits:

Reliable insulation and strain relief for crimped connections and cable ends
Easy to use – shrinks quickly and evenly with a heat gun
Excellent chemical and mechanical resistance – protects against acids and corrosion
Low smoke and halogen-free – safe for confined or sensitive environments
Ideal for marine and automotive electrical systems – durable and long-lasting

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Efficient organization, easy access, and clear overview

Want to keep different sizes and colors of heat shrink tubing neatly organized and always within reach? This practical holder accommodates up to six heat shrink tubing dispenser boxes, providing a clear overview and quick access to the right size or color whenever you need it.

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Technical information

Shrink ratio: 2:1
Minimum shrink temperature: 100 °C
Operating temperature: –55 °C to +125 °C
Tensile strength (at room temp): min. 10.4 MPa / ≥ 12 MPa
Elongation at break (at room temp): min. 200% / ≥ 400%
Tensile strength after aging (175 °C, 168 h): min. 7.28 MPa / ≥ 10.4 MPa
Elongation after aging (175 °C, 168 h): min. 100% / ≥ 300%
Dielectric strength (unaged): withstands 2.5 kV for 1 min without breakdown
Dielectric strength (aged): at least 50% of unaged value for 1 min without breakdown
Corrosion (158 °C, 168 h): none
Longitudinal shrinkage: ≤ 10% / ≤ 5%
Low-temperature flexibility (–55 °C, 4 h): no cracking
Heat shock (250 °C, 4 h): no cracking
Breakdown voltage: > 19.7 kV/mm / > 25 kV/mm
Volume resistivity: ≥ 10¹⁴ Ω·cm
Flame rating: VW-1
Material: Halogen- and cadmium-free polyolefin
Certifications: UL, REACH, RoHS approved
Colors: Red, black and yellow

Table of Skyllermarks 2:1 Heat Shrink Tubing in Boxes – Various Cable Sizes 1.5–120 mm², Available in Red, Black, and Yellow, Lengths from 5 to 9 Meters — Click the table to view a larger image.

Wired and Inspired

How to Use

Place the heat shrink tubing over the cable and crimp terminal.
Make sure the contact surface of the terminal is clean and free from debris.
Apply heat evenly with a heat gun until the tubing shrinks tightly and the adhesive activates, creating a strong and sealed insulation.

This 2:1 heat shrink tubing provides excellent electrical insulation and mechanical protection in electrical systems.
Its halogen-free, flame-retardant construction makes it especially suitable for marine, automotive, and industrial wiring applications where long-term safety and reliability are essential.

Questions & Answers

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