Wuerth Neutral Silicone Sealant - White - 280ml - Joint Sealing

Würth Universal Silicone Sealant 280ml - Versatile Construction Sealant for Indoor and Outdoor Use

Professional universal silicone sealant for waterproof sealing of construction joints

Are you looking for a reliable silicone sealant that you can use both indoors and outdoors? Würth universal silicone is the perfect all-round solution for all your sealing jobs. This one-component sealant offers excellent performance and long-lasting protection against moisture and weather.

Why choose this universal silicone sealant?

Versatile applications. This sealant is suitable for countless applications, from windows and doors to sanitary fixtures and gutters. A true all-rounder for interior and exterior work.

Excellent adhesion. Adheres perfectly to glass, ceramics, most plastics, and other common building materials. No primer needed for most substrates.

Weatherproof and durable. Resistant to aging, weather conditions, and UV radiation. Remains flexible and waterproof for years, from -40°C to +100°C.

Protects against mold. Contains fungicidal agents that actively prevent mold and mildew formation. Ideal for damp environments.

Remains elastic The sealant remains permanently elastic, allowing it to adapt to temperature fluctuations and material expansion without tearing.

Application possibilities

• Sealing windows and doors
• Joints around sanitary fixtures
• Gutters and downpipes
• Connection of window frames
• Glassware and glazing
• Ceramic applications
• Plastic and metal structures
• Construction joints inside and outside

Instructions for use

Preparation Ensure the surface is clean, dry, and free of dust and grease. If desired, apply masking tape along the joint for a clean finish.

Application Cut off the top of the cartridge and attach the nozzle. Cut the nozzle at an angle depending on the joint width. Place the cartridge in a caulking gun and apply the sealant evenly to the joint.

Finishing The joint depth must be at least 6 mm and approximately half the joint width. Smooth the joint with soapy water before the sealant forms a skin. Remove the masking tape before the sealant begins to harden.

Curing Allow the sealant to fully cure before being subjected to load.

Technical specifications

• Contents: 280ml per cartridge
• Base: Acetate-crosslinking silicone polymer
• Skin formation time: Approximately 20 minutes at 23°C and 50% humidity
• Curing rate: Approximately 2mm per 24 hours
• Temperature resistance: From -40°C to +100°C
• Processing temperature: Between +7°C and +40°C
• Hardness: Shore A 14
• Elongation at break: Approximately 250%
• Density: 0.96 g/cm³
• Shelf life: 12 months in unopened packaging in a dry, cool place

Available colors

• Transparent
• White

Suitable for

Glass, ceramics, most plastics, metal, and many other building materials.

Not suitable for

Materials that may release certain components over time, such as EPDM or butyl rubber. Also not suitable for surfaces that may react with acetic acid released during curing. Do not use for aquariums.

Important features

• Resistant to standard cleaning agents
• UV-resistant, does not yellow
• Waterproof and durable
• Professional quality
• Suitable for DIY enthusiasts and professionals

Required accessories

For application, you need a caulking gun (sold separately). For a perfect finish, you can use a caulking spatula or smoothing tool.

Würth quality

Würth is known worldwide for reliable, professional products. This universal silicone sealant combines years of expertise with excellent performance for both professional applications and DIY projects.

Safety information

Keep out of reach of children. Ensure good ventilation during use. Acetic acid is released during curing – avoid inhalation. In case of contact with eyes, rinse immediately with water and seek medical advice.

Storage

Store in a dry, cool place between +7°C and +40°C. Keep the cartridge closed when not in use.

Tips for optimal results

Always test on a small, inconspicuous area first if in doubt about the substrate. For paintable joints, it is better to use acrylic sealant. Ensure adequate ventilation during application and curing. The joint width should be a maximum of 5 times the joint depth for optimal performance.