• Standard catalyst for mold making grades ELASTOSIL M 4511, M 4512, M 4514, and M 4541
• Outstanding chemical resistance to attack by polyurethane resins, mold life is significantly extended

Curing agent for ELASTOSIL M condensation curing RTV-2 silicone rubbers. Wacker Catalyst T 21 is especially suitable for the processing of polyurethane resins.

The 'Best use before end' date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.