Sealant paste with deep light cure and secondary moisture cure

Semi-flowable, silicone sealant paste with deep light cure capability (UV/visible) and secondary moisture cure mechanism for shadow curing. Forms a high-strength rubber for gasketing and sealing applications.

LOCTITE® SI 5039 is a translucent, semi-flowable silicone sealant paste, with the benefit of deep light cure capability – both ultraviolet and visible – combined with a secondary moisture cure mechanism for shadow curing. Expose it to sufficient UV light, visible light or atmospheric moisture, and this product will form a high-strength rubber for gasketing and sealing applications. And you can rely on even knit lines for continuous beads.

The Loctite 742350 Specifications:

• Product Type: Silicone Sealant
• Color: Light Yellow Clear
• Primary Color: Light Yellow Clear
• Chemical Type: Acetoxy
• Material Compatibility: Glass Metal Ceramic
• Cure Time: 72h
• Physical Form: Paste
• Container Size: 40lb
• Container Type: Pail
• Odor: Acetic Acid
• Number of Components: 1
• Specific Gravity: 1.05
• Elongation at Break: ≥150%
• Tensile Strength: ≥1N/mm²
• VOCs Content: 3.5%
• Hardness: 32 to 48Shore A
• Applications: Gasketing, Sealing and Bonding
• Package Quantity: 1CA