20 Shore A 1:1 Mix Ratio Platinum Cure Liquid Silicone Rubber for Culture Stone Wall Tile Molds

Hanast HN-E620 belongs to the HN-E6XX series of two-component, food grade addition-cure (platinum-catalysed) liquid silicone rubbers. Components A and B are mixed 1:1 by weight and cure at room temperature or with heat acceleration. At 20 Shore A the cured rubber delivers 6.0 MPa tensile strength, 21 kN/m tear strength and 520% elongation, a soft, high-tear mold that pulls out of deep stone texture, split faces and undercut edges without tearing. It is used for culture stone and artificial stone molds, cement wall tile, 3D wall panel, brick veneer, split-face tile, mosaic, terrazzo, GRC panel, gypsum and plaster decoration, and paving products that need fine surface reproduction and long mold life.

• Culture Stone and Wall Tile Mold Grade - 21 kN/m tear strength with 520% elongation releases deep stone texture, split faces and undercut edges without tearing, which keeps culture stone and wall tile molds usable over long production runs.
• Fine Surface Reproduction - low viscosity of 4000 +/- 500 mPa.s flows into fine grain, tool marks and moulded edge detail, so cast stone faces match the master without pinholes.
• 3D Wall Panel and Brick Veneer Tooling - soft 20 Shore A rubber flexes around deep relief, rebates and thin brick edges, so large 3D panels and brick veneer sheets demold without a rigid multi-part mother mold in many cases.
• Low Shrinkage, Repeatable Size - linear shrinkage of 0.1% or less keeps tile thickness, joint lines and panel dimensions consistent from master to production mold.
• 1:1 Mix Ratio by Weight - equal-part dosing reduces weighing error and suits both manual batching and meter-mix dispensing equipment.
• Dual Curing Mode - 3-4 h at 25 deg C for large molds, or 20 minutes or less at 80-100 deg C for production lines, with a 30-40 minute pot life for mixing, degassing and pouring.
• Eleven Hardness Grades Shore A 0 to 50 - HN-E600 ultra-soft gel through HN-E650 firm elastomer share the same 1:1 mix ratio, so plants can move from fine texture molds to firm high-wear molds without changing process.
• Food Grade and Eco Friendly - FDA, MSDS and RoHS certified, odourless, non-toxic and non-corrosive, so the same grade also serves chocolate, candy and baking molds.
• Temperature Resistance -50 deg C to 200 deg C - stable during heat-accelerated cure, in hot workshops and in high-temperature transport.
• No Low-Molecule Release - volume stays unchanged during crosslinking, so master dimensions and mold fit are repeatable batch after batch.
• Platinum Catalyst Poisoning Control - the TDS documents incompatibility with organotin compounds, sulfur and polysulfide compounds, amines, polyurethane, phosphorus compounds, organic acids and solder flux residues, cutting cure failures on site.
• OEM and Private Label Customization - hardness, viscosity, colour, pot life and private label packing available for bulk and wholesale programs.
• Bulk Packing and Fast Delivery - components packed in 10/20/25 kg iron or plastic drums or 20/40/50 kg kits per set, 50 tons per month capacity, 12 months shelf life, classified as non-dangerous goods for export.

• Culture stone and veneer - culture stone, artificial stone, split-face stone, stone veneer, brick veneer, stone cladding and corner stone molds.
• Wall tile and panel - cement wall tile, 3D wall panel, relief wall panel, mosaic, terrazzo tile, skirting and decorative wall cladding molds.
• Building products - GRC panel, gypsum and plaster decoration, concrete paver, paving slab, precast panel and artificial rock molds.
• Art and craft - sculpture, statue, resin and polyester casting, jewelry, candle, soap, wax, life casting and doll molds.
• Food contact - chocolate, candy, sugar craft, baking and ice molds in FDA certified grade.

1. Pre-mix - stir Component A and Component B thoroughly before use to ensure homogeneity.
2. Weighing - accurately weigh A and B in a 1:1 ratio by weight using a precision scale.
3. Mixing - mix for 2-3 minutes until uniform; scrape the container walls and bottom.
4. Degassing - for bubble-free molds, degas under vacuum to remove entrapped air.
5. Pouring - pour into the clean, dry mold frame within the 30-40 minute pot life and ensure full coverage.
6. Curing - cure at 25 deg C for 3-4 h, or heat at 80-100 deg C for 20 minutes or less; demold after full cure.

• For industrial and professional use only. Wear nitrile gloves, safety goggles and protective clothing; avoid skin and eye contact.
• Eye contact: rinse immediately with plenty of clean water for 10-15 minutes and seek medical attention. Skin contact: wipe off with a clean cloth, then wash with soap and water; do not use solvents.
• Ensure adequate ventilation in the work area. Do not ingest.
• Catalyst poisoning warning - this addition-cure platinum silicone may fail to cure in contact with organotin compounds, sulfur and polysulfide compounds, amines, polyurethane, phosphorus compounds, organic acids and solder flux residues. All substrates, tools and containers must be clean and free of these contaminants.
• Do not use with condensation-cure (tin-cure) silicone residues without thorough cleaning.
• Do not add colourants or fillers before testing, as these may disrupt catalyst activity and prevent cure.
• The mixed compound has a 30-40 minute pot life; use promptly and do not return unused mixed material to the original containers.
• Keep containers tightly sealed when not in use and store away from food, children, acids, alkalis and incompatible materials.

Shenzhen Hanast New Materials Co., Ltd. manufactures industrial silicone materials at a 40,000 square metre production base in Guangdong, China, supplying platinum cure liquid silicone rubber to gypsum and plaster factories, culture stone and cast stone producers, wall and floor tile manufacturers, cement component producers, craft mold makers and composite processors worldwide.