The GBS318BBL heat shrink sleeve with glueless, 2:1, 31.8mm, polyolefin construction from BM Group is a 50m length sleeve designed for ultrasonic welding, friction welding, and bonding without the use of adhesives or bindings. It has wide applicability in electrical insulation fencing, large cable surfaces, and joint protection. This product has certified temperature range from -55°C to 125°C and is UL, RoHS, and REACH approved.