Soudal Trade Multi-Purpose Silicone White 270ml | 121643

Flexible, Mould-Resistant Acetoxy Silicone Sealant for Interior & Exterior Use

The Soudal Trade Multi-Purpose Silicone White 270ml is a high-quality, one-component acetoxy silicone sealant designed to create a flexible, durable and weathertight seal across a wide range of everyday building and sanitary applications.

Suitable for both interior and exterior use, this versatile clear silicone offers very good adhesion to many common materials, including glass, metals, wood and ceramic tiles. It contains a fungicide to resist mould growth, making it particularly useful in bathrooms, kitchens and other areas exposed to high relative humidity.

Its permanently elastic formulation accommodates joint movement of up to ±25%, while good UV resistance and a service temperature range from -60°C to +120°C make it suitable for demanding sealing applications throughout domestic, commercial and general construction work.

Features

• Professional Multi-Purpose Silicone Sealant
• 270ml Cartridge
• White Finish
• Product Code 121643
• Acetoxy-Cure Silicone
• Suitable for Interior & Exterior Use
• Creates a Flexible, Durable Weathertight Seal
• Permanently Elastic After Curing
• Maximum Joint Movement of ±25%
• Mould Resistant
• Contains Fungicide to Resist Mould Growth
• Good UV Resistance
• Very Good Adhesion to Many Materials
• Suitable for Glass, Metals, Wood & Ceramic Tiles
• Ideal for Bathrooms & Kitchens
• Suitable for General Building Applications
• Easy to Apply
• Temperature Resistant from -60°C to +120°C
• Application Temperature from +5°C to +35°C
• Moisture-Curing Formula
• Approximately 20-Minute Skin Formation
• Approximately 2mm/24hr Curing Speed

Soudal's current UK technical data confirms that Trade Multi-Purpose Silicone remains permanently elastic after curing and combines easy application with very good adhesion and good UV resistance.

Versatile Multi-Purpose Silicone

Soudal Trade Multi-Purpose Silicone is designed as a practical all-round sealant for common building applications.

The manufacturer lists applications spanning general construction, masonry, woodworking and roofing, flooring, baths, showers and sinks, kitchen fittings, ceramic tiles, plumbing, HVAC ducting, shop windows and signs, and electrical conduit.

This versatility makes a useful White silicone for tradespeople who need one cartridge capable of tackling a broad selection of routine sealing jobs.

Mould Resistant for Bathrooms & Kitchens

The formulation contains a fungicide to resist mould growth, making the silicone particularly well suited to applications exposed to elevated humidity.

Soudal specifically recommends it for connection joints between walls and baths or shower bases, as well as sealing joints in sanitary rooms, bathrooms and kitchens.

The transparent finish is particularly useful where a discreet seal is preferred or where the surrounding materials should remain visible.

Permanently Flexible Seal

Once cured, Trade Multi-Purpose Silicone remains permanently elastic, allowing the finished joint to accommodate movement rather than forming a rigid seal.

Soudal's current technical data gives a maximum allowed joint movement of ±25%, an elongation at break of approximately 800%, and a Shore A hardness of approximately 15 ±5.

This combination makes it suitable for appropriate connection and sanitary joints where flexibility is important.

Interior & Exterior Performance

Soudal specifies Trade Multi-Purpose Silicone for both internal and external use, with the cured sealant providing good UV resistance and all-weather versatility.

Its cured temperature resistance extends from approximately -60°C to +120°C, giving the silicone a wide service-temperature range once fully cured.

Very Good Adhesion

The silicone provides very good adhesion to many materials, with Soudal highlighting common building surfaces such as glass, metals, wood and ceramic tiles.

Surfaces should be rigid, clean, dry and free from dust and grease before application. Soudal recommends Primer 150 for porous substrates, while suitable Soudal activators or cleaners may be used for non-porous substrates where required.

Important Application Limitations

Trade Multi-Purpose Silicone is an acetoxy-cure silicone, so correct substrate selection is important.

Soudal's technical data states that the product is not paintable and is not suitable for natural stone. A preliminary adhesion and compatibility test is advisable where substrate compatibility is uncertain.

• Brand: Soudal
• Product Name: Trade Multi-Purpose Silicone
• Product Code: 121643
• Product Type: Multi-Purpose Silicone Sealant
• Colour: White
• Pack Size: 270ml
• Packaging: Cartridge
• Base: Polysiloxane
• Curing System: Moisture Curing
• Cure Type: Acetoxy
• Consistency: Stable Paste
• Density: Approx. 0.95g/ml
• Skin Formation: Approx. 20 Minutes
• Curing Speed: Approx. 2mm/24hr
• Maximum Joint Movement: ±25%
• Elasticity Modulus: Approx. 0.23N/mm²
• Elongation at Break: Approx. 800%
• Maximum Tension: Approx. 1.45N/mm²
• Hardness: Approx. 15 ±5 Shore A
• Application Temperature: +5°C to +35°C
• Temperature Resistance: -60°C to +120°C
• UV Resistant: Yes
• Mould Resistant: Yes
• Interior Use: Yes
• Exterior Use: Yes
• Paintable: No
• Suitable for Natural Stone: No

Suitable Applications

• Bathrooms
• Baths & Shower Bases
• Showers & Sinks
• Kitchens
• Kitchen Fittings
• Ceramic Tiles
• Sanitary Joints
• General Construction
• General Building Maintenance
• Masonry Applications
• Woodworking
• Roofing
• Flooring
• Plumbing
• HVAC Ducting
• Shop Windows & Signs
• Electrical Conduit
• Interior Sealing
• Exterior Sealing

Soudal lists these areas among the intended applications for the Trade Multi-Purpose Silicone range.

Why Choose Soudal Trade Multi-Purpose Silicone 121644?

The Soudal Trade Multi-Purpose Silicone White  provides a practical combination of flexibility, mould resistance, weather resistance and broad substrate adhesion for professional sealing work.

Its transparent finish is ideal where a discreet seal is required, while the ±25% movement capability, good UV resistance and -60°C to +120°C cured temperature resistance provide dependable performance across a broad range of appropriate interior and exterior applications.

For bathrooms, kitchens, glazing, general building and maintenance work, it offers a versatile trade-quality silicone in a convenient standard cartridge.