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Würth

Würth E6 BAS Silicone Acetate

Würth E6 BAS Silicone Acetate

Key Features

  • Excellent resistance to ageing, weathering, and UV exposure.
  • Paint-compatible (preliminary testing recommended).
  • Coloured version is bitumen-proof for extended application range.
  • Flexible and durable with 25% continuous motion absorption.
  • Suitable for indoor and outdoor joints, including use in cold climates.
  • Slight discolouration possible depending on conditions and substrate.
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Description

Reliable Acetate-Curing Sealant

Würth E6 BAS Silicone Acetate is a high-quality, acetate-curing silicone designed for professional sealing of connecting, expansion, and construction joints. With strong resistance to ageing, UV radiation, and weathering, it provides durable joint performance both indoors and outdoors.

Versatile Application Range

Ideal for wall and floor connection joints, glazing, and general sealing work, E6 BAS is suitable for use in cold climates, where stability during curing is required. The coloured variant of this sealant is bitumen-proof, enabling secure use in roofing and waterproofing applications.

Durability and Flexibility

The sealant offers 25% continuous motion absorption, a Shore A hardness of 18, and a breaking elongation of 150%. These properties ensure flexibility and resilience under joint movement while maintaining long-term integrity of the seal.

Professional Finish

Würth E6 BAS applies smoothly and cures consistently, delivering a neat, professional appearance. While compatible with many paints, preliminary testing should be carried out to confirm suitability. Slight discolouration may occur under certain conditions.

Important Notes

Preliminary testing is recommended for all substrates, especially when paint or coating compatibility is required. Discolouration may occur in certain environments or when exposed to specific substrates.

Technical Information

Specifications

Contents: 310 ml

Chemical basis: Neutrally networked silicone polymer

Colour: White

Continuous motion absorption: 25 %

Shore A hardness: 18

Min./max. processing temperature: +5 °C to +40 °C

Min./max. temperature resistance: -40 °C to +100 °C

Full curing speed/conditions: 2 mm/day at 23°C and 50% relative humidity

Min. skin-formation time: 25 minutes (at 23°C, 50% relative humidity)

Min. breaking elongation: 150 %

Fungicidal properties: No

Shelf life from production: 12 months

Density: 1.01 g/cm³ (at 23°C)

Documents

Application Instructions

  1. Ensure all surfaces are load-bearing, clean, dry, and free of grease or contaminants.
  2. Observe joint dimensions as recommended in the technical data sheet.
  3. Insert PE back-fill material as required.
  4. On absorbent surfaces such as concrete, pre-treat with primer.
  5. Apply evenly with a cartridge gun.
  6. Smooth the sealant before skin formation using a smoothing agent.

Safety and Usage Notes

  • Carry out preliminary adhesion and paint-compatibility testing before full application.
  • Not suitable for permanent water immersion or food-contact areas. Store cartridges in a cool, dry, frost-free environment.