Electrical resin guns insulate low- and high-voltage cables. They use compressed air to evenly spray resin and provide high-strength, moisture-resistant insulation across cables. They are low maintenance and come with different optimal pressure ranges for use on different sizes and types of electrical cables. Electrical resin gun accessories include nozzles and fittings. Injection and piercing nozzles puncture compound bags and have mastic seals to prevent spills.