3M Cold Shrink Tubing, Grey 17.3mm Sleeve Dia. x 39.6mm Length 2:1 Ratio, 8440 Series
- RS Stock No.:
- 251-7651
- Mfr. Part No.:
- 8443-2
- Brand:
- 3M
Bulk discount available
Subtotal (1 unit)*
£14.32
(exc. VAT)
£17.18
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 9 unit(s) ready to ship
- Plus 7 unit(s) ready to ship from another location
- Plus 72 unit(s) shipping from 24 November 2025
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Units | Per unit |
|---|---|
| 1 - 14 | £14.32 |
| 15 - 49 | £13.59 |
| 50 + | £13.18 |
*price indicative
- RS Stock No.:
- 251-7651
- Mfr. Part No.:
- 8443-2
- Brand:
- 3M
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | 3M | |
| Sleeve Diameter | 17.3mm | |
| Colour | Grey | |
| Shrunk Diameter | 2.8mm | |
| Sleeve Type | Cold Shrink | |
| Adhesive Lined | No | |
| Shrink Ratio | 2:1 | |
| Sleeve Length | 39.6mm | |
| Material | Silicone Rubber | |
| Operating Temperature Range | -55 → +260 °C | |
| Flame Retardant | Yes | |
| Halogen Free | No | |
| Series | 8440 | |
Select all | ||
|---|---|---|
Brand 3M | ||
Sleeve Diameter 17.3mm | ||
Colour Grey | ||
Shrunk Diameter 2.8mm | ||
Sleeve Type Cold Shrink | ||
Adhesive Lined No | ||
Shrink Ratio 2:1 | ||
Sleeve Length 39.6mm | ||
Material Silicone Rubber | ||
Operating Temperature Range -55 → +260 °C | ||
Flame Retardant Yes | ||
Halogen Free No | ||
Series 8440 | ||
- COO (Country of Origin):
- US
3M Silicone Rubber Tubing
From 3M, this silicon rubber tubing is perfect for cable and wiring protection in all kinds of applications. It’s robust and flexible construction means it is suitable for even challenging environments.
Features and Benefits
• Primary electrical insulation for all solid dielectric (rubber and plastic) insulated wire and cable splices rated up to 1000V
Seals tight, retains its resilience and pressure even after prolonged years of ageing and exposure
• Simple installation, no torches, heat or tools required
• Accommodates a wide range of cable sizes
• Physical protection and moisture sealing for high voltage, air-insulated connectors and lugs such as spacer cable and lug connections to bus bar
• Resists moisture, acids and alkalis, ozone and ultraviolet light
Seals tight, retains its resilience and pressure even after prolonged years of ageing and exposure
• Simple installation, no torches, heat or tools required
• Accommodates a wide range of cable sizes
• Physical protection and moisture sealing for high voltage, air-insulated connectors and lugs such as spacer cable and lug connections to bus bar
• Resists moisture, acids and alkalis, ozone and ultraviolet light
Applications
• For indoor, outdoor, in cable tray for overhead use
• Ideal for electrical aircraft cables
• Temp range -55°C to +260°C
• Resists fire - will not support flame
• Resists fluid splashes
• Resists moisture
• Hydrophobic surface - water forms into ’beads’. Does not wet the whole surface.
• Ideal for electrical aircraft cables
• Temp range -55°C to +260°C
• Resists fire - will not support flame
• Resists fluid splashes
• Resists moisture
• Hydrophobic surface - water forms into ’beads’. Does not wet the whole surface.
Why Choose 3M?
3M is a trusted name in connector and wiring solutions, providing high quality cables, connectors and accessories. From industrial computing to domestic applications, 3M provides the reliable and versatile product range you need.
3M Cold Shrink Tubing, Silicone Rubber Construction, 6 to 2AWG - 8440 Series - 8443-2
Want to minimise sparking on your inline power connections? Grab this cold shrink tubing from 3M. Its short length of 39.6mm makes it just what you need to seal metallic wire connectors and reduce the chance of electric sparks damaging your equipment. As the sleeve is made from non-conductive silicone, it helps to protect you against electric shocks. This handy tubing fits a broad cable diameter range between 6 and 2AWG, so you'll find it's widely compatible.
Features & Benefits
• Safe to use in hazardous conditions, thanks to a vast operating temperature range between -55°C and +260°C
• Flame-retardant, so it's unlikely to contribute to the spread of a fire
• Resists acids, alkalis and UV light for durability
• Flame-retardant, so it's unlikely to contribute to the spread of a fire
• Resists acids, alkalis and UV light for durability
Applications
• Power utilities
• Transportation industry
• Aerospace engineering
• Public infrastructure
• Transportation industry
• Aerospace engineering
• Public infrastructure
Do I need special tools to apply this tubing?
As the sleeve is supplied factory-expanded, you can install it manually for speed and simplicity.