TECHSEAL PU2 is a high performance Two component polyurethane sealant. When cured it will form a tough, flexible seal and bond capable of cyclic, expansion and compression movement. Joints or fabrications formed with this sealant can be expected to extend and compress a total of (± 25%) of original joint dimensions. TECHSEAL PU2 is a high performance Two component polyurethane sealant. When cured it will form a tough, flexible seal and bond capable of cyclic, expansion and compression movement. Joints or fabrications formed with this sealant can be expected to extend and compress a total of (± 25%) of original joint dimensions. TechsealPu2 is virtually unaffected by normal weathering conditions such as rain, sunlight, snow, sleet, ultra- violet radiation, ozone, atmospheric contamination and pollution. Its excellent weather ability enables it to retain its original properties after years of exposure. Its physical properties remain relatively unchanged over a wide temperature range (-20°C to 70°C).