Heat shrink solderable butt connectors 4009110000 Specifications Material: (insulation) heat-shrinkable polyolefin, (solder) lead-free tin, (rings) meltable thermally stabilized thermoplastic. Solder melting temp: 138, flux activated rosin Work temp: -55 to +125 Shrinking temp: >200 Dielectric strength: 2kv Protection type: ip 67 Copper lugs, terminal blocks, cable tubes, cable ties, cable glands, heat shrink solder butt connectors are all our key products!