Black 2:1 Heat Shrink Tubing - Jumbo Reel Reviews

The Black 2.1 Heat Shrink Tubing Jumbo Reel is used for electrical insulation, cable bundling and the provision of good physical protection to pipes and wires. 
For more information on heat shrink tubing please review our comprehensive guide to heat shrink tubing detailing how to pick the correct size and how to apply it.
Our buyers guide also include information on the common uses of heatshrink & how to correctly use heatshrink tubing. 
Material:
Polyolefin - standard wall heat shrink tube 
Characteristics:
Flame retardant
Very good chemical and solvent resistance
Excellent electrical and physical properties
Flexible
High dielectric strength
UL Approved
Applications:
Electrical insulation
Cable bundling
Provide pipes and wires with good physical protection 
Chemical Resistance:
Fuel
Hydraulic fluid
Lubricating oil
Shrinkable Temperature:
80°C 
Operating Temperature:
-40°C to +135°C 
Please find our heat shrink gun to shrink the tubing: Available here.
Item No.
Colour
Length (m)
Supplied Internal Diameter Min (mm)
Recovered Internal Diameter (mm)
Wall Thickness After Recovery (mm)
GCT21HSTJ12BLA
Black
300
1.2
0.6
0.36 (±0.10)
GCT21HSTJ16BLA
Black
300
1.6
0.8
0.36 (±0.10)
GCT21HSTJ24BLA
Black
150
2.4
1.2
0.45 (±0.10)
GCT21HSTJ32BLA
Black
150
3.2
1.6
0.45 (±0.10)
GCT21HSTJ48BLA
Black
60
4.8
2.4
0.56 (±0.10)
GCT21HSTJ64BLA
Black
60
6.4
3.2
0.56 (±0.10)
GCT21HSTJ95BLA
Black
60
9.5
4.8
0.56 (±0.10)
GCT21HSTJ127BLA
Black
60
12.7
6.4
0.56 (±0.10)
GCT21HSTJ191BLA
Black
60
19.1
9.5
0.70 (±0.10)
GCT21HSTJ254BLA
Black
30
25.4
12.7
0.90 (±0.15)
GCT21HSTJ381BLA
Black
30
38.1
19.1
1.00 (±0.15)
GCT21HSTJ508BLA
Black
25
50.8
25.4
1.10 (±0.20)
GCT21HSTJ762BLA
Black
25
76.2
38.1
1.46 (±0.20)
GCT21HSTJ1016BLA
Black
25
101.6
50.8
1.46 (±0.20)
Frequently Asked Questions
What is heat shrink tubing used for?+
Heat shrink tubing is used to insulate, protect and identify electrical connections, cable splices, joints and exposed wiring. When heat is applied, the tubing shrinks tightly around the conductor, forming a snug protective sleeve.
What does 2:1 shrink ratio mean?+
A 2:1 ratio means the tubing shrinks to half its original diameter when heated, the standard ratio suitable for the majority of cable insulation and splice protection work.
What does black heat shrink represent?+
Black represents the L2 phase under current UK BS 7671 wiring regulations.
How is jumbo reel heat shrink supplied?+
Jumbo reels supply heat shrink tubing in a continuous roll, cut to length as needed at installation - the cost-effective choice for trade users running large quantities of insulation and splice work.
Got a different question? Our team is happy to help.
Get in Touch

About GTSE:

Founded in the UK in 2011, GTSE is the one-stop shop for cable ties, accessories and tools. We supply high-quality, durable and dependable solutions for every purpose, whether it’s a tiny DIY job or a huge commercial project. You can count on us to deliver exactly what you need – and fast.

Phone:

01246 386 126

Email:

sales@gtse.co.uk

Location:

GTSE WeWork - Dalton Place,
29 John Dalton St,
Manchester
Manchester
M2 6DS