MPN

3M Cold Shrink Tubing, Black 67.8mm Sleeve Dia. x 457mm Length 2:1 Ratio, 8420 Series

RS Stock No.:: 307-774
Mfr. Part No.:: 8429-18
Brand:: 3M

3M Cold Shrink Tubing, Black 67.8mm Sleeve Dia. x 457mm Length 2:1 Ratio, 8420 Series

View this category

Bulk discount available

Subtotal (1 unit)*

£52.57

(exc. VAT)

£63.08

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

Plus 88 unit(s) shipping from 08 September 2025
Plus 20 unit(s) shipping from 08 September 2025
Plus 999,999,911 unit(s) shipping from 07 October 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 - 14	£52.57
15 - 49	£49.93
50 +	£48.35

*price indicative

RS Stock No.:: 307-774
Mfr. Part No.:: 8429-18
Brand:: 3M

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	3M
	Sleeve Diameter	67.8mm
	Colour	Black
	Shrunk Diameter	32.2mm
	Sleeve Type	Cold Shrink
	Adhesive Lined	No
	Shrink Ratio	2:1
	Sleeve Length	457mm
	Material	EPDM Rubber
	Operating Temperature Range	-40 → +90 °C
	Halogen Free	No
	Series	8420

	Select all
	Brand 3M
	Sleeve Diameter 67.8mm
	Colour Black
	Shrunk Diameter 32.2mm
	Sleeve Type Cold Shrink
	Adhesive Lined No
	Shrink Ratio 2:1
	Sleeve Length 457mm
	Material EPDM Rubber
	Operating Temperature Range -40 → +90 °C
	Halogen Free No
	Series 8420

3M 8420 Series Cold Shrink Tubing, 67.8mm Sleeve Diameter, -40 to 90°C Operating Temperature Range - 8429-18

This cold shrink tubing is designed for effective electrical insulation and sealing of connectors and splices. Measuring 67.8mm in outer diameter and shrinking to 32.2mm, the 457mm long EPDM rubber sleeve can operate within a temperature range of -40 to 90 °C. This robust and flexible solution addresses numerous electrical protection needs in various applications.

Features & Benefits

• Tool free installation saves time and effort
• Flexible design ensures a moisture tight seal
• UV resistant for durability in outdoor settings
• Complies with industry standards for electrical insulation
• Made from EPDM rubber, offering high temperature resistance

Applications

• Used for Effective sealing of inline electrical connectors
• Suitable for Primary electrical insulation for cable repair up to 1kV
• Ideal for connections in harsh environments
• Use in conduit seals for robust electrical
• Suitable for direct burial

What is the installation process for this tubing?

Position the assembly on the cable before making connections, ensuring a clean cable insulation of at least 5cm. After connecting, slide the tubing over the lug and unwind the core while gently pulling the loose tab. Once positioned correctly, the installation is complete.

How does the cold shrink design offer an advantage over heat shrink options?

Cold shrink tubing does not require heat during installation, allowing for quicker and safer application, especially in environments where heat could damage other components.

What material is used in the construction of the tubing?

The tubing is constructed from EPDM rubber, which offers excellent flexibility and resistance to high temperatures, ensuring long-lasting performance in various application scenarios.

Can it be reused or repositioned after installation?

Once installed, the cold shrink tubing should not be repositioned. However, if removal is necessary, it can be cut away, but replacement will be required as the material does not allow for reapplication.