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TE Connectivity Adhesive Lined Heat Shrink Tubing, Black 4.5mm Sleeve Dia. x 1.2m Length 3:1 Ratio, ATUM Series

RS Stock No.:: 433-0535
Mfr. Part No.:: ATUM-4.5/1.5-0-STK
Brand:: TE Connectivity

TE Connectivity Adhesive Lined Heat Shrink Tubing, Black 4.5mm Sleeve Dia. x 1.2m Length 3:1 Ratio, ATUM Series

Bulk discount available

Subtotal (1 unit)*

£8.88

(exc. VAT)

£10.66

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

173 unit(s) ready to ship
Plus 35 unit(s) ready to ship from another location
Plus 45 unit(s) shipping from 08 October 2025

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

Units	Per unit
1 - 14	£8.88
15 - 49	£8.48
50 +	£7.98

*price indicative

Alternative

This product is not currently available. Here is our alternative recommendation.

RS PRO Adhesive Lined Heat Shrink Tubing, Black 3mm Sleeve Dia. x 1.2m Length 3:1 Ratio

RS Stock No.: 481-1775

Each

£7.17

(exc. VAT)

£8.60

(inc. VAT)

RS Stock No.:: 433-0535
Mfr. Part No.:: ATUM-4.5/1.5-0-STK
Brand:: TE Connectivity

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	TE Connectivity
	Sleeve Diameter	4.5mm
	Colour	Black
	Shrunk Diameter	1.5mm
	Sleeve Type	Heat Shrink
	Adhesive Lined	Yes
	Shrink Ratio	3:1
	Sleeve Length	1.2m
	Material	Polyolefin
	Operating Temperature Range	-55 → +110 °C
	Flame Retardant	Yes
	Halogen Free	No
	Series	ATUM

	Select all
	Brand TE Connectivity
	Sleeve Diameter 4.5mm
	Colour Black
	Shrunk Diameter 1.5mm
	Sleeve Type Heat Shrink
	Adhesive Lined Yes
	Shrink Ratio 3:1
	Sleeve Length 1.2m
	Material Polyolefin
	Operating Temperature Range -55 → +110 °C
	Flame Retardant Yes
	Halogen Free No
	Series ATUM

ATUM - Moisture Proof Sleeving 3:1 or 4:1

The ATUM range of heat shrink tubing has been specifically designed to provide environmental sealing and protection in a wide variety of electrical applications and is suitable for both commercial and military use. The tubing has an internal adhesive lining that when heated forms a moisture proof seal that bonds to a wide variety of materials. The high expansion ratio makes it possible to repair most damaged cables without the need to remove any connectors.

Features and Benefits

• Provides excellent environmental sealing for electrical components, wire splices, cable jackets and harness breakouts
• High strength bonding – the adhesive in ATUM tubing bonds to a wide variety of plastics, rubbers and metals
• Medium walled for increased mechanical protection
• Flame retardant jacket
• Polyolefin material – commonly used insulating material, flexible and durable
• Heat shrink ratio of 3:1 or 4:1 meaning when heated the tubing shrinks to either one third or one quarter of its original diameter
• Standard black in colour
• Operating temperature range of -55 to +110 °C
• Minimum shrink temperature: +80 °C
• Supplied in lengths of 1.2m

What does a heat shrink ratio of 3:1 or 4:1 mean?
A ratio of 3:1 means when the tube is heated it shrinks to one third of its original diameter. The original tubing size is three times larger than its shrunken form.
A ratio of 4:1 means when the tube is heated it shrinks to one quarter of its original diameter. The original tubing size is four times larger than its shrunken form.

How can I shrink the tubing?
A heat gun or a heat shrink oven are ideal ways to shrink your tubing. Before heating always check to ensure you know the correct heating temperature of your tubing.
Remember to ensure all health and safety precautions have been taken prior to using a heating devise.

Standards

AMS-DTL - 2305 3-4 (black only) UL 224 600V File (E85381)

Approvals

UL E85381 (Black Only); MIL-DTL-23053/4 Class 3 (Black Only)

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