(SIL) Soudal Glass & Glazing Silicone Neutral Cure 300ml

Professional Neutral-Cure Silicone for Glass, Window Frames & Weatherproof Sealing.

Soudal Glass & Glazing Silicone is a high-quality, one-component neutral-cure silicone sealant designed for reliable sealing, waterproofing and weatherproof glazing work. It forms a durable, permanently elastic seal with excellent UV resistance, making it ideal for interior and exterior joints around windows, glass panels, display cabinets, frames, architraves and general glazing applications.
This silicone is non-corrosive and non-slump, so it stays in place on vertical joints and is suitable for use on many common construction materials. Once cured, it accommodates movement up to ±25%, helping reduce cracking and joint failure caused by vibration, thermal expansion and building movement.
Supplied in a convenient 300ml cartridge, it is easy to apply with a standard caulking gun, tool neatly, and achieve a clean professional finish for glazing and general sealing tasks.

Features & Benefits

Key Features

• Neutral cure, non-corrosive silicone sealant

• Non-slump – ideal for vertical glazing joints

• Highly flexible with movement capability up to ±25%

• Excellent UV resistance and weather durability

• Strong adhesion on many common substrates (including glass and frames)

• 300ml cartridge format for easy trade application

Key Benefits

• Helps deliver long-lasting, weatherproof window and glazing seals outdoors and indoors

• Reduces joint cracking and leaks by handling movement and vibration

• Cleaner installs on vertical joints thanks to non-slump consistency

• Neutral cure chemistry supports use on sensitive metals and common frame materials

Technical Specs (Typical)

• Basis: Polysiloxane (silicone)

• Curing system: Moisture curing

• Skin formation (23°C / 50% RH): approx. 10 minutes

• Curing speed (23°C / 50% RH): approx. 2 mm / 24 hours

• Density: approx. 1.00 g/mL (clear), approx. 1.26 g/mL (colours)

• Shore A hardness: approx. 25 ± 5

• Elastic recovery: >80%

• Maximum allowed distortion: ±25%

• Tensile strength: approx. 1.35 MPa

Key Applications

Typical Uses

• Window and door frame sealing (internal and external)

• Sealing around glass panels, display cabinets and glazed joinery

• Weatherproofing joints around aluminium and metal frames

• General glazing joints where UV resistance and movement capability are required

Important Compatibility Notes (Glazing)

• Not recommended for direct contact with secondary sealants of insulating glass units or PVB film in laminated glass (select an appropriate glazing silicone for those systems).

Soudal Glass & Glazing Silicone FAQs

Q1: Is this a neutral-cure silicone?
A: Yes—neutral cure and non-corrosive, making it suitable for many glazing and frame materials.
Q2: Can it be used outdoors?
A: Yes—excellent UV resistance and weather durability suit exterior window and glazing joints.
Q3: Will it slump on vertical joints?
A: It’s non-slump, helping it stay in place on vertical applications.
Q4: How much joint movement can it handle?
A: Up to ±25% movement (when used in correctly designed joints).
Q5: How fast does it cure?
A: Typical cure rate is about 2 mm per 24 hours at 23°C / 50% RH; thicker beads take longer.
Q6: Is it hazardous or dangerous goods?
A: The SDS lists it as Non-Hazardous and Non-Dangerous Goods (AU).