Copaltite Sealant for Condensers
Copaltite seals condenser tube sheet flanges, water box connections, channel cover joints, and steam inlet connections against steam, condensate, cooling water, and process vapour. Its chemical resistance, -315°F to 1500°F range, and gap-filling capability make it the standard condenser joint sealant for power generation, marine, and industrial facilities across the UAE and GCC.
The Condenser Sealing Environment
Condensers — whether steam surface condensers in power plants, process condensers in petrochemical facilities, or marine condensers on vessels — present a unique sealing challenge: the hot-side steam or vapour connections operate at elevated temperature, while the cooling water side of the same unit operates at ambient or cold conditions. This temperature differential across the condenser body creates thermal stresses that cause joint faces to warp and sealants to cycle between compression and tension with every operating cycle.
Large-diameter water box flanges and tube sheet connections develop surface imperfections over time — and the combination of cooling water on one side and steam condensate on the other creates a corrosive environment that accelerates surface degradation. Conventional sealants that perform in simple single-temperature service fail rapidly in the complex multi-temperature, multi-media condenser environment.
Frequently Asked Questions
Copaltite is the standard sealant for condenser water box flanges, tube sheet joint faces, and steam inlet connections. Copaltite Cement Form is used on large-diameter flanges with surface imperfections. Copaltite Liquid Form is used on machined steam connections and precision fittings.
Yes. Copaltite resists brine, seawater, and cooling water media — it has been used in marine condenser service for decades and completely meets the MIL-S-15204D Navy requirement for marine turbine and condenser sealants.
Yes. Copaltite's temperature range of -315°F to 1500°F covers both the elevated temperature of the steam side and the cold conditions of the cooling water side within the same condenser unit.
