SOUDAL SILIRUB 2 Neutral Silicone Sealant Clear 600ml High Elasticity ISO 37

Product Overview

Soudal Silirub 2 Neutral Clear 600 ml is a neutral-cure, low modulus silicone sealant suitable for sealing and construction applications both indoors and outdoors. It is typically used by professionals in building, window installation, façade works, and general construction, and is formulated to have excellent adhesion to a wide range of porous and non-porous substrates including brick, concrete, wood, aluminum, glass, powder coatings, PVC, and acrylic. Resistant to UV radiation, it does not corrode metal and retains its properties in temperatures from -60°C to +180°C.

The standout feature of Silirub 2 is its very high elasticity, with an elongation at break of over 800% (ISO 37) and elastic recovery greater than 80% (ISO 7389). This high flexibility ensures joint integrity in applications with significant movement or thermal expansion, thereby reducing the risk of seal failure in demanding environments. Contractors and fabricators working on building envelopes, window installation, or expansion joints will find this sealant particularly suited for jobs that require long-lasting, durable elastic performance under challenging conditions.

Key Features

• Neutral cure system ? does not corrode metal substrates, suitable for sensitive building components


• High elongation at break ? >800% (ISO 37), suited for moving joints and dynamic façades


• Wide adhesion range ? adheres to brick, concrete, wood, glass, aluminum, PVC, powder-coated and acrylic surfaces


• UV and weather resistance ? maintains properties outdoors, suitable for façade and window sealing


• Temperature resistance ? functional from -60°C to +180°C for diverse climate applications


• Elastic recovery >80% ? per ISO 7389, for durable flexible sealing


• Low modulus ? allows for permissible joint movement up to 25%

Technical Specifications

• Base: Polysiloxane (oxime)


• Consistency: Paste


• Curing system: Moisture cure


• Skin formation time: ~5 min (20°C/65% RH)


• Curing rate: 2 mm/24h (20°C/65% RH)


• Shore A hardness: 25 ? 5


• Density: 1.03?1.25 g/ml (color-dependent)


• Temperature resistance: -60°C to +180°C


• Application temperature: +5°C to +25°C


• Elongation at break: >800% (ISO 37)


• Elastic recovery: >80% (ISO 7389)


• Elastic modulus: 0.38 N/mm? (ISO 37)


• Maximum tensile stress: 1.6 N/mm? (ISO 37)


• Service movement: 25%

Applications

Used in construction and building maintenance for sealing windows, door frames, façade elements, expansion and connection joints, as well as bonding polycarbonate and acrylic sheets. Suitable for both interior and exterior applications, including environments exposed to weather or requiring non-corrosive sealants. Preferred for use on materials where joint movement, UV resistance, and wide compatibility are critical, such as building envelopes, glazing, and façade cladding projects.

Packaging & Shipping

Standard export packaging. Each 600 ml foil sausage contains clear, neutral silicone; carton quantity and accessories depend on order and may include application nozzles. Bulk packaging options available for large projects or OEM requirements.