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Chemical structure of a polydimethylsiloxane – the basis of silicone sealants
Silicone sealants are one-part, ready-to-use systems. They consist of polydimethylsiloxane, curing agent, fillers and additives. After application, they are crosslinked by contact with atmospheric moisture, with byproducts released during curing. Crosslinking starts with the formation of a skin on the surface of the silicone rubber substrate and gradually progresses into the interior of the compound. Depending on the nature of the crosslinker, a small amount of an amine, acetic acid or a neutral compound, such as alcohol, is released during vulcanization.
Thanks to their outstanding properties, RTV-1 sealants solve a wide variety of sealing, bonding and coating problems. Their outstanding weathering and aging resistance is the result of their special chemical properties.
WACKER is a reliable, fully backward-integrated partner providing consistent quality and customer proximity. As a full portfolio provider, we offer various purchasing options, from the raw materials to the finished silicone sealants, all of which are available in containers, drums or cartridges.
- Unparalleled UV stability and temperature resistance
- Constant stress-strain values at extreme temperatures (−30 C to +80 °C)
- Flexible at widely varying temperatures (−40 °C to +150 °C)
- Outstanding weathering and aging properties
- Sanitary sealant
- General purpose construction sealant
- Glazing, windows and doors
- Natural stone sealant
- Aquarium sealant
- High-temperature and fire-resistant sealant
- Sealant for food contact applications