Polysulfide sealants are resins that provide flexible and chemically resistant sealing. Polysulfide sealants exhibit excellent chemical resistance and good performance in submerged conditions. They have excellent resistance to fuels, salt water, ozone, and sunlight. Polysulfide sealants exhibit properties of underwater curing capability, high dielectric strength, high chemical resistance, and raised physical strength. In addition, they exhibit resistance to impact, shock, vibration, and therma cycling and low and high cryogenic temperature serviceability. Polysulfide sealants provide waterproof seal minimizing the risk of water leakage that may cause damage or erosion. Polysulfide sealant formulations provide good working flow, corrosion protection, and superior electrical insulation.
Polysulfide sealants are specialty sealants that find application in sealing joints that are to remain immersed in liquids for a protracted period of time. They are mostly used in chemical storage tanks, fuel tanks, swimming pools, fountains, and petrochemical plants, among others. Polysulfide sealants are available in the market in the form of pourable formulations or sealant guns and provide substantial resistance from fuel and solvents. They also do their job well within a wide temperature range and are used in sealing of aircraft windows and in sound proof windows in buildings.
