Dual-Wall Heat Shrink Tubing | 3:1 Ratio with Adhesive Liner | Waterproof Cable Protection (1.6-50mm)

Achieve a permanent, waterproof seal for wire connections with this 1m length of 3:1 heat shrink tubing. The dual-wall construction features an internal adhesive lining that melts to create an airtigh...
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Questions about this product
- What temperature do I need to use to shrink this tubing and melt the glue?
- The tubing starts shrinking at 80°C, but you need 120°C to 135°C for a full recovery. This higher heat ensures the inner adhesive melts completely to seal your connection. A standard heat gun is the best tool for the job.
- How much does this tubing shrink, and how do I choose the right size?
- This tubing has a 3:1 shrink ratio, so it shrinks to one-third of its starting diameter. We offer expanded sizes from 1.6mm up to 50mm. Always pick a size slightly larger than your wire bundle that shrinks smaller than your connection.
- Can I use this heat shrink tubing for underwater or outdoor marine wiring?
- Yes, this dual-wall tubing is perfect for marine and outdoor environments. The inner adhesive melts to create an airtight, waterproof seal that locks out moisture. It safely handles harsh temperatures from -55°C up to 135°C.
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