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Crestamould® B21 Sealer

Crestamould® B21 Sealer is a brushable sealing laminating resin for polystyrene foam surfaces. When used in conjunction with a chopped strand mat, this sealer provides a styrene resistant barrier between the polystyrene plug and styrenated tooling pastes. It has good adhesion to tooling pastes such as Crestamould® T29.

Crestamould® B21 sealer’s low styrene content significantly reduces the polystyrene surface erosion as seen with traditional styrene-containing resins. The sealer compound can be used to laminate CSM to provide a more structurally stable foundation for mould production. 

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