A one-part neutral curing low modulus silicone sealant for construction and concrete joint sealing.
DOWSIL™ 813C is designed for interior and exterior construction applications, including external weather seals, expansion joints and perimetral joints in buildings, other construction structures, pedestrian walkways and traffic roads where fuel immersion is not involved. It offers durable adhesion to a range of porous and non-porous surfaces, including concrete, masonry, brick, PVC-U, wood and some metals used in construction.
Technical highlights
- Cure system: alkoxy / neutral
- Joint movement capability: ±50 %
- Hardness: Shore A 29
- Elongation at break: 700 %
- Tensile strength: 1.9 MPa according to TDS
- Application temperature: +5 °C to +50 °C
- Service temperature: -40 °C to +150 °C
Storage and packaging
- Usable life: 12 months
- Store in original unopened containers in cool and dry conditions at or below 30 °C
- Packaging: 310 ml cartridges and 600 ml sausages
Note
Not recommended for structural glazing, insulated glazing or other glazing applications. Do not use on bituminous substrates, natural rubber, chloroprene, EPDM, submerged joints or areas exposed to physical abuse or abrasion. Before use, substrate compatibility should be evaluated and the manufacturer’s TDS and SDS documentation should be followed.
📄 Technical documentation
Download the product TDS / PDF for detailed technical information.
📩 Inquiry
For pricing, product availability, technical documentation and B2B supply options in your market, please contact us.

