Condensation Cure Liquid Silicone Rubber For Large Scale Architectural Mold Projects

Description of Tin Cure Silicone Rubber

HN-620 A/B is a two-component liquid silicone material. To use, mix the two components in a 100:2 ratio. This product cures at room temperature.

Application of Tin Cure Silicone Rubber

HN-620 A/B is an industrial-grade liquid silicone rubber designed for construction mold manufacturing. It is ideal for the molding and replication of large-scale stones, gypsum, cement components, cultural and artificial stones, Roman columns, stone carvings, furniture, and various architectural decorations. Additionally, it is suitable for resin and gypsum handicrafts, handmade soaps, tire molding, and other segmented mold applications.

Technical parameter of Tin Cure Silicone Rubber

• Model: HN-640AB
• Key Feature: Easy foaming / Rapid de-airing (Note: See tip below)
• Viscosity: 170,000 cP/cs
• Specific Gravity: 1.06 g/cm³
• Hardness: 20 Shore A
• Tensile Strength: 3.1 - 3.6 MPa
• Tear Strength: 19.8 - 24.3 kN/m
• Elongation at Break: 600% - 720%
• Linear Shrinkage: ≤ 0.2%
• Curing Agent Ratio: 2% - 3%
• Pot Life (Working Time): 30 - 40 Minutes
• Curing Time: 3 - 4 Hours

• Superior Durability : High tear resistance with exceptional tolerance to high/low temperatures, acids, alkalis, and aging.
• Excellent Processing : Good fluidity and self-de-airing properties ensure easy degassing and smooth demolding without surface whitening.
• High Reuse Rate : High mold durability allows for frequent turnover and a significantly extended service life.
• Dimensional Stability : Ultra-low linear shrinkage rate of less than 0.2% .
• Fully Customizable : Color, hardness, viscosity, and working time can be adjusted to meet specific requirements.