What Is a Polysulphide Sealant

Polysulfide sealants are designed for joints that need to withstand prolonged immersion in liquids. Typical applications include swimming pools, fountains, cooling towers, fuel and chemical storage tanks, wastewater treatment and petrochemical plants.

Is polysulphide sealant waterproof?

Polysulphide sealant provides a waterproof seal minimizing the risk of water leaking into an area and causing damage or erosion.

What is the difference between polyurethane and polysulfide?

Polysulfide is the slowest curing of the three sealant types, often taking a week or more to reach full cure. … Polyurethane is the best sealant for the hull-to-deck joint. It is also a good choice for through-hull fittings and for rubrails and toerails, but not if rails are raw teak because some teak cleaners soften it.