Sugru

Sugru is designed to stick to as many other materials as possible. It forms a strong bond to aluminium, steel, ceramics, glass and other materials including plastics like perspex.

Sugru is like modeling clay when you take it from its pack. Once it's exposed to air, it cures to a tough flexible silicone overnight using the moisture in the air.
When Sugru cures, it's flexible rather than rigid. Which means that you can repair things that need to be able to move like textiles, cables, or shoes.

Sugru is silicone, so it's completely waterproof and durable outdoors. It's easy to clean with soap and water.

Source: sugru.comAdded: 8 December 2010