CRC RTV Neutral Cure Silicone 310ml is a single‑component, room‑temperature vulcanising sealant that delivers fast curing and dependable performance across a broad range of substrates. The translucent formula blends discreetly with ceramics, steel, aluminium, concrete, brick, glass, most paints, and many plastics to create a durable, flexible weatherproof seal that stands up to NZ conditions.

Why this silicone stands out

• 100% RTV silicone with neutral cure: non‑corrosive on metals and safe for varied substrates
• Permanently flexible and waterproof: maintains a resilient seal even with movement, vibration, and temperature shifts
• Excellent adhesion: bonds effectively to zinc‑coated/galvanised metals, aluminium, fibreglass, ceramics, glass, concrete, brick, and many plastics
• Contractors grade: designed for professional use with reliable, long‑lasting performance
• Bridges gaps up to 8 mm: ideal for sealing irregular joints and glazing assemblies
• Single component and fast curing: ready to apply with minimal prep and quick set for efficient workflows

Ideal uses and applications

• Glazing and weatherproofing on zinc‑coated/galvanised metals, aluminium frames, and fibreglass for durable curtain wall assemblies
• General‑purpose adhesive and sealant for ceramics, aluminium, concrete, brick, glass, painted surfaces, and most plastics
• Draught proofing and weather sealing to improve energy efficiency in doors, windows, and penetrations
• Butt or lap joints and metal to concrete perimeter sealing in construction and renovation projects
• Plumbing related tasks: spouting, flashing, downpipes, and pipe penetrations
• Metal roofing systems, sheet‑metal fabrications, and structural details requiring a reliable seal
• Skylights, air‑conditioning ducting, and ventilation penetrations where a flexible, weatherproof seal is needed
• Metal and PVC flues/extraction units and other multi‑material assemblies needing durable, versatile sealing

Performance in real‑world scenarios

Whether you’re sealing a cladding upgrade, glazing a steel frame, or weatherproofing a concrete balcony, CRC RTV Neutral Cure Silicone provides a trustworthy, long‑lasting bond that resists cracking, shrinking, and vibration. Its translucent tone helps maintain the aesthetic of architectural joints while delivering a robust seal against moisture, dust, and temperature fluctuations.

Practical tips for best results

• Prepare surfaces by cleaning and drying thoroughly to maximize adhesion and performance
• Cut the nozzle to the desired bead size and apply with steady, continuous pressure for an even seal
• Tool or smooth the bead after application to achieve a uniform finish
• Allow adequate curing under recommended conditions for a durable, weatherproof seal